97977019 has 24 divisors (see below), whose sum is σ = 119968128. Its totient is φ = 79672320.

The previous prime is 97977017. The next prime is 97977031. The reversal of 97977019 is 91077979.

It is a happy number.

It is not a de Polignac number, because 97977019 - 2¹ = 97977017 is a prime.

It is a super-2 number, since 2×97977019² = 19198992504252722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (97977013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79899 + ... + 81115.

It is an arithmetic number, because the mean of its divisors is an integer number (4998672).

Almost surely, 2^97977019 is an apocalyptic number.

97977019 is a deficient number, since it is larger than the sum of its proper divisors (21991109).

97977019 is a wasteful number, since it uses less digits than its factorization.

97977019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 250047, while the sum is 49.

The square root of 97977019 is about 9898.3341527754. The cubic root of 97977019 is about 461.0075881448.

The spelling of 97977019 in words is "ninety-seven million, nine hundred seventy-seven thousand, nineteen".