97777983 has 4 divisors (see below), whose sum is σ = 130370648. Its totient is φ = 65185320.

The previous prime is 97777961. The next prime is 97777987. The reversal of 97777983 is 38977779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38977779 = 3 ⋅12992593.

It is not a de Polignac number, because 97777983 - 2¹⁷ = 97646911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97777987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16296328 + ... + 16296333.

It is an arithmetic number, because the mean of its divisors is an integer number (32592662).

Almost surely, 2^97777983 is an apocalyptic number.

97777983 is a deficient number, since it is larger than the sum of its proper divisors (32592665).

97777983 is a wasteful number, since it uses less digits than its factorization.

97777983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32592664.

The product of its digits is 4667544, while the sum is 57.

The square root of 97777983 is about 9888.2750265150. The cubic root of 97777983 is about 460.6952043124.

The spelling of 97777983 in words is "ninety-seven million, seven hundred seventy-seven thousand, nine hundred eighty-three".