7981946 has 8 divisors (see below), whose sum is σ = 13683360. Its totient is φ = 3420828.

The previous prime is 7981937. The next prime is 7981949. The reversal of 7981946 is 6491897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7981946² = 127422923893832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7981897 and 7981906.

It is not an unprimeable number, because it can be changed into a prime (7981949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285056 + ... + 285083.

It is an arithmetic number, because the mean of its divisors is an integer number (1710420).

Almost surely, 2^7981946 is an apocalyptic number.

7981946 is a deficient number, since it is larger than the sum of its proper divisors (5701414).

7981946 is a wasteful number, since it uses less digits than its factorization.

7981946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570148.

The product of its digits is 108864, while the sum is 44.

The square root of 7981946 is about 2825.2337956353. The cubic root of 7981946 is about 199.8494366819.

It can be divided in two parts, 798 and 1946, that added together give a cube (2744 = 14³).

The spelling of 7981946 in words is "seven million, nine hundred eighty-one thousand, nine hundred forty-six".