747197990 has 96 divisors (see below), whose sum is σ = 1778837760. Its totient is φ = 220587840.

The previous prime is 747197959. The next prime is 747198041. The reversal of 747197990 is 99791747.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 158609 + ... + 163251.

It is an arithmetic number, because the mean of its divisors is an integer number (18529560).

Almost surely, 2^747197990 is an apocalyptic number.

747197990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

747197990 is an abundant number, since it is smaller than the sum of its proper divisors (1031639770).

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

747197990 is a wasteful number, since it uses less digits than its factorization.

747197990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698 (or 4687 counting only the distinct ones).

The product of its (nonzero) digits is 1000188, while the sum is 53.

The square root of 747197990 is about 27334.9225351015. The cubic root of 747197990 is about 907.4274199682.

The spelling of 747197990 in words is "seven hundred forty-seven million, one hundred ninety-seven thousand, nine hundred ninety".