249998455 has 32 divisors (see below), whose sum is σ = 357212160. Its totient is φ = 164384640.

The previous prime is 249998453. The next prime is 249998459. The reversal of 249998455 is 554899942.

It is not a de Polignac number, because 249998455 - 2¹ = 249998453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249998396 and 249998405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249998453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90586 + ... + 93304.

It is an arithmetic number, because the mean of its divisors is an integer number (11162880).

Almost surely, 2^249998455 is an apocalyptic number.

249998455 is a deficient number, since it is larger than the sum of its proper divisors (107213705).

249998455 is a wasteful number, since it uses less digits than its factorization.

249998455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839.

The product of its digits is 4665600, while the sum is 55.

The square root of 249998455 is about 15811.3394435766. The cubic root of 249998455 is about 629.9592272261.

The spelling of 249998455 in words is "two hundred forty-nine million, nine hundred ninety-eight thousand, four hundred fifty-five".