97789144 has 8 divisors (see below), whose sum is σ = 183354660. Its totient is φ = 48894568.

The previous prime is 97789129. The next prime is 97789157. The reversal of 97789144 is 44198779.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111814 + ... + 6111829.

Almost surely, 2^97789144 is an apocalyptic number.

It is an amenable number.

97789144 is a deficient number, since it is larger than the sum of its proper divisors (85565516).

97789144 is a wasteful number, since it uses less digits than its factorization.

97789144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12223649 (or 12223645 counting only the distinct ones).

The product of its digits is 508032, while the sum is 49.

The square root of 97789144 is about 9888.8393656688. The cubic root of 97789144 is about 460.7127325377.

The spelling of 97789144 in words is "ninety-seven million, seven hundred eighty-nine thousand, one hundred forty-four".