97542739 has 8 divisors (see below), whose sum is σ = 111564288. Its totient is φ = 83542920.

The previous prime is 97542733. The next prime is 97542743. The reversal of 97542739 is 93724579.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97542739 - 2⁵ = 97542707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97542733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5724 + ... + 15094.

It is an arithmetic number, because the mean of its divisors is an integer number (13945536).

Almost surely, 2^97542739 is an apocalyptic number.

97542739 is a deficient number, since it is larger than the sum of its proper divisors (14021549).

97542739 is a wasteful number, since it uses less digits than its factorization.

97542739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10865.

The product of its digits is 476280, while the sum is 46.

The square root of 97542739 is about 9876.3727653425. The cubic root of 97542739 is about 460.3254454996.

The spelling of 97542739 in words is "ninety-seven million, five hundred forty-two thousand, seven hundred thirty-nine".