7949340 has 120 divisors (see below), whose sum is σ = 28540512. Its totient is φ = 1814400.

The previous prime is 7949327. The next prime is 7949369. The reversal of 7949340 is 439497.

It is a super-3 number, since 3×7949340³ (a number of 22 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7949295 and 7949304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10990 + ... + 11690.

Almost surely, 2^7949340 is an apocalyptic number.

7949340 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7949340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14270256).

7949340 is an abundant number, since it is smaller than the sum of its proper divisors (20591172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7949340 is a wasteful number, since it uses less digits than its factorization.

7949340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 7949340 is about 2819.4573946063. The cubic root of 7949340 is about 199.5769390615.

The spelling of 7949340 in words is "seven million, nine hundred forty-nine thousand, three hundred forty".