97919774 has 4 divisors (see below), whose sum is σ = 146879664. Its totient is φ = 48959886.

The previous prime is 97919771. The next prime is 97919819. The reversal of 97919774 is 47791979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47791979 = 1973 ⋅24223.

It is a super-2 number, since 2×97919774² = 19176564280422152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97919771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24479942 + ... + 24479945.

It is an arithmetic number, because the mean of its divisors is an integer number (36719916).

Almost surely, 2^97919774 is an apocalyptic number.

97919774 is a deficient number, since it is larger than the sum of its proper divisors (48959890).

97919774 is a wasteful number, since it uses less digits than its factorization.

97919774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48959889.

The product of its digits is 1000188, while the sum is 53.

The square root of 97919774 is about 9895.4420820901. The cubic root of 97919774 is about 460.9177864035.

The spelling of 97919774 in words is "ninety-seven million, nine hundred nineteen thousand, seven hundred seventy-four".