99779265 has 12 divisors (see below), whose sum is σ = 172950804. Its totient is φ = 53215584.

The previous prime is 99779257. The next prime is 99779287. The reversal of 99779265 is 56297799.

It can be written as a sum of positive squares in 2 ways, for example, as 79067664 + 20711601 = 8892^2 + 4551^2 .

It is not a de Polignac number, because 99779265 - 2³ = 99779257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1108614 + ... + 1108703.

It is an arithmetic number, because the mean of its divisors is an integer number (14412567).

Almost surely, 2^99779265 is an apocalyptic number.

It is an amenable number.

99779265 is a deficient number, since it is larger than the sum of its proper divisors (73171539).

99779265 is a wasteful number, since it uses less digits than its factorization.

99779265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217328 (or 2217325 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 54.

The square root of 99779265 is about 9988.9571527763. The cubic root of 99779265 is about 463.8171113973.

The spelling of 99779265 in words is "ninety-nine million, seven hundred seventy-nine thousand, two hundred sixty-five".