97974890 has 32 divisors (see below), whose sum is σ = 195063120. Its totient is φ = 35195904.

The previous prime is 97974889. The next prime is 97974983. The reversal of 97974890 is 9847979.

It can be written as a sum of positive squares in 8 ways, for example, as 55815841 + 42159049 = 7471^2 + 6493^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5375 + ... + 14994.

Almost surely, 2^97974890 is an apocalyptic number.

97974890 is a deficient number, since it is larger than the sum of its proper divisors (97088230).

97974890 is a wasteful number, since it uses less digits than its factorization.

97974890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20426.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 97974890 is about 9898.2266088426. The cubic root of 97974890 is about 461.0042489527.

The spelling of 97974890 in words is "ninety-seven million, nine hundred seventy-four thousand, eight hundred ninety".