97749984 has 48 divisors (see below), whose sum is σ = 270103680. Its totient is φ = 30867840.

The previous prime is 97749947. The next prime is 97749991. The reversal of 97749984 is 48994779.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24972 + ... + 28619.

It is an arithmetic number, because the mean of its divisors is an integer number (5627160).

Almost surely, 2^97749984 is an apocalyptic number.

It is an amenable number.

97749984 is an abundant number, since it is smaller than the sum of its proper divisors (172353696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97749984 is a wasteful number, since it uses less digits than its factorization.

97749984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53623 (or 53615 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 57.

The square root of 97749984 is about 9886.8591574878. The cubic root of 97749984 is about 460.6512263260.

The spelling of 97749984 in words is "ninety-seven million, seven hundred forty-nine thousand, nine hundred eighty-four".