97990159 has 16 divisors (see below), whose sum is σ = 109641600. Its totient is φ = 87130624.

The previous prime is 97990133. The next prime is 97990177. The reversal of 97990159 is 95109979.

It is a cyclic number.

It is not a de Polignac number, because 97990159 - 2⁷ = 97990031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97990129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21057 + ... + 25285.

It is an arithmetic number, because the mean of its divisors is an integer number (6852600).

Almost surely, 2^97990159 is an apocalyptic number.

97990159 is a deficient number, since it is larger than the sum of its proper divisors (11651441).

97990159 is a wasteful number, since it uses less digits than its factorization.

97990159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4322.

The product of its (nonzero) digits is 229635, while the sum is 49.

The square root of 97990159 is about 9898.9978785734. The cubic root of 97990159 is about 461.0281962731.

The spelling of 97990159 in words is "ninety-seven million, nine hundred ninety thousand, one hundred fifty-nine".