97400891 has 8 divisors (see below), whose sum is σ = 113904384. Its totient is φ = 81544680.

The previous prime is 97400869. The next prime is 97400893. The reversal of 97400891 is 19800479.

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

It is not a de Polignac number, because 97400891 - 2¹⁰ = 97399867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97400893) 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, 161495 + ... + 162096.

It is an arithmetic number, because the mean of its divisors is an integer number (14238048).

Almost surely, 2^97400891 is an apocalyptic number.

97400891 is a deficient number, since it is larger than the sum of its proper divisors (16503493).

97400891 is a wasteful number, since it uses less digits than its factorization.

97400891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323641.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 97400891 is about 9869.1889737708. The cubic root of 97400891 is about 460.1022000394.

The spelling of 97400891 in words is "ninety-seven million, four hundred thousand, eight hundred ninety-one".