249220995 has 16 divisors (see below), whose sum is σ = 399168672. Its totient is φ = 132779520.

The previous prime is 249220987. The next prime is 249221047. The reversal of 249220995 is 599022942.

It is not a de Polignac number, because 249220995 - 2³ = 249220987 is a prime.

It is a super-2 number, since 2×249220995² = 124222208697580050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7179 + ... + 23451.

It is an arithmetic number, because the mean of its divisors is an integer number (24948042).

Almost surely, 2^249220995 is an apocalyptic number.

249220995 is a deficient number, since it is larger than the sum of its proper divisors (149947677).

249220995 is a wasteful number, since it uses less digits than its factorization.

249220995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17302.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 249220995 is about 15786.7347795546. The cubic root of 249220995 is about 629.3055209421.

The spelling of 249220995 in words is "two hundred forty-nine million, two hundred twenty thousand, nine hundred ninety-five".