249798087 has 80 divisors (see below), whose sum is σ = 470494464. Its totient is φ = 129373200.

The previous prime is 249798049. The next prime is 249798097. The reversal of 249798087 is 780897942.

It is not a de Polignac number, because 249798087 - 2¹¹ = 249796039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249798037) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 754512 + ... + 754842.

Almost surely, 2^249798087 is an apocalyptic number.

249798087 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

249798087 is a deficient number, since it is larger than the sum of its proper divisors (220696377).

249798087 is an equidigital number, since it uses as much as digits as its factorization.

249798087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 249798087 is about 15805.0019614045. The cubic root of 249798087 is about 629.7908829760.

The spelling of 249798087 in words is "two hundred forty-nine million, seven hundred ninety-eight thousand, eighty-seven".