9797090400 has 144 divisors (see below), whose sum is σ = 35432888400. Its totient is φ = 2612551680.

The previous prime is 9797090377. The next prime is 9797090411. The reversal of 9797090400 is 40907979.

9797090400 is a `hidden beast` number, since 97 + 9 + 70 + 90 + 400 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205185 + ... + 248384.

It is an arithmetic number, because the mean of its divisors is an integer number (246061725).

Almost surely, 2^9797090400 is an apocalyptic number.

9797090400 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9797090400 is an abundant number, since it is smaller than the sum of its proper divisors (25635798000).

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

9797090400 is a wasteful number, since it uses less digits than its factorization.

9797090400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453598 (or 453579 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 9797090400 is about 98980.2525759558. The cubic root of 9797090400 is about 2139.7631554343.

The spelling of 9797090400 in words is "nine billion, seven hundred ninety-seven million, ninety thousand, four hundred".