97443986 has 4 divisors (see below), whose sum is σ = 146165982. Its totient is φ = 48721992.

The previous prime is 97443967. The next prime is 97443991. The reversal of 97443986 is 68934479.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77774761 + 19669225 = 8819^2 + 4435^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24360995 + ... + 24360998.

Almost surely, 2^97443986 is an apocalyptic number.

97443986 is a deficient number, since it is larger than the sum of its proper divisors (48721996).

97443986 is a wasteful number, since it uses less digits than its factorization.

97443986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48721995.

The product of its digits is 1306368, while the sum is 50.

The square root of 97443986 is about 9871.3720424265. The cubic root of 97443986 is about 460.1700474021.

The spelling of 97443986 in words is "ninety-seven million, four hundred forty-three thousand, nine hundred eighty-six".