97399343920 has 40 divisors (see below), whose sum is σ = 233758431360. Its totient is φ = 37702970880.

The previous prime is 97399343891. The next prime is 97399343929. The reversal of 97399343920 is 2934399379.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (97399343929) 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, 19634485 + ... + 19639444.

It is an arithmetic number, because the mean of its divisors is an integer number (5843960784).

Almost surely, 2^97399343920 is an apocalyptic number.

It is an amenable number.

97399343920 is an abundant number, since it is smaller than the sum of its proper divisors (136359087440).

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

97399343920 is a wasteful number, since it uses less digits than its factorization.

97399343920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39273973 (or 39273967 counting only the distinct ones).

The product of its (nonzero) digits is 9920232, while the sum is 58.

The spelling of 97399343920 in words is "ninety-seven billion, three hundred ninety-nine million, three hundred forty-three thousand, nine hundred twenty".