249985377 has 6 divisors (see below), whose sum is σ = 361090002. Its totient is φ = 166656912.

The previous prime is 249985369. The next prime is 249985397. The reversal of 249985377 is 773589942.

249985377 is a `hidden beast` number, since 2 + 499 + 85 + 3 + 77 = 666.

It can be written as a sum of positive squares in only one way, i.e., 204947856 + 45037521 = 14316^2 + 6711^2 .

It is not a de Polignac number, because 249985377 - 2³ = 249985369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249985397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13888068 + ... + 13888085.

It is an arithmetic number, because the mean of its divisors is an integer number (60181667).

Almost surely, 2^249985377 is an apocalyptic number.

It is an amenable number.

249985377 is a deficient number, since it is larger than the sum of its proper divisors (111104625).

249985377 is a wasteful number, since it uses less digits than its factorization.

249985377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27776159 (or 27776156 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 249985377 is about 15810.9258742175. The cubic root of 249985377 is about 629.9482421576.

The spelling of 249985377 in words is "two hundred forty-nine million, nine hundred eighty-five thousand, three hundred seventy-seven".