7399998 has 40 divisors (see below), whose sum is σ = 17563392. Its totient is φ = 2320704.

The previous prime is 7399993. The next prime is 7400011. The reversal of 7399998 is 8999937.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7399993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1411 + ... + 4097.

Almost surely, 2^7399998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7399998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8781696).

7399998 is an abundant number, since it is smaller than the sum of its proper divisors (10163394).

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

7399998 is a wasteful number, since it uses less digits than its factorization.

7399998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718 (or 2709 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 7399998 is about 2720.2937341398. The cubic root of 7399998 is about 194.8694984817.

The spelling of 7399998 in words is "seven million, three hundred ninety-nine thousand, nine hundred ninety-eight".