97801899 has 32 divisors (see below), whose sum is σ = 143829504. Its totient is φ = 58752000.

The previous prime is 97801889. The next prime is 97801903. The reversal of 97801899 is 99810879.

It is a de Polignac number, because none of the positive numbers 2^k-97801899 is a prime.

It is a super-2 number, since 2×97801899² = 19130422896012402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97801859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389524 + ... + 389774.

It is an arithmetic number, because the mean of its divisors is an integer number (4494672).

Almost surely, 2^97801899 is an apocalyptic number.

97801899 is a deficient number, since it is larger than the sum of its proper divisors (46027605).

97801899 is a wasteful number, since it uses less digits than its factorization.

97801899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467.

The product of its (nonzero) digits is 326592, while the sum is 51.

The square root of 97801899 is about 9889.4842636004. The cubic root of 97801899 is about 460.7327624892.

The spelling of 97801899 in words is "ninety-seven million, eight hundred one thousand, eight hundred ninety-nine".