97779087 has 24 divisors (see below), whose sum is σ = 170909856. Its totient is φ = 52586496.

The previous prime is 97779083. The next prime is 97779091. The reversal of 97779087 is 78097779.

It is an interprime number because it is at equal distance from previous prime (97779083) and next prime (97779091).

It is not a de Polignac number, because 97779087 - 2² = 97779083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97779083) 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 23 ways as a sum of consecutive naturals, for example, 44578 + ... + 46719.

It is an arithmetic number, because the mean of its divisors is an integer number (7121244).

Almost surely, 2^97779087 is an apocalyptic number.

97779087 is a deficient number, since it is larger than the sum of its proper divisors (73130769).

97779087 is a wasteful number, since it uses less digits than its factorization.

97779087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91327 (or 91324 counting only the distinct ones).

The product of its (nonzero) digits is 1555848, while the sum is 54.

The square root of 97779087 is about 9888.3308500474. The cubic root of 97779087 is about 460.6969381915.

The spelling of 97779087 in words is "ninety-seven million, seven hundred seventy-nine thousand, eighty-seven".