909972798 has 16 divisors (see below), whose sum is σ = 2079937920. Its totient is φ = 259992216.

The previous prime is 909972793. The next prime is 909972803. The reversal of 909972798 is 897279909.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (909972793) and next prime (909972803).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (909972793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10832968 + ... + 10833051.

It is an arithmetic number, because the mean of its divisors is an integer number (129996120).

Almost surely, 2^909972798 is an apocalyptic number.

909972798 is an abundant number, since it is smaller than the sum of its proper divisors (1169965122).

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

909972798 is a wasteful number, since it uses less digits than its factorization.

909972798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21666031.

The product of its (nonzero) digits is 5143824, while the sum is 60.

The square root of 909972798 is about 30165.7553858676. The cubic root of 909972798 is about 969.0424525125.

The spelling of 909972798 in words is "nine hundred nine million, nine hundred seventy-two thousand, seven hundred ninety-eight".