249060987 has 80 divisors (see below), whose sum is σ = 456121600. Its totient is φ = 132269760.

The previous prime is 249060979. The next prime is 249060989. The reversal of 249060987 is 789060942.

It is a happy number.

It is not a de Polignac number, because 249060987 - 2³ = 249060979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249060989) 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, 656964 + ... + 657342.

It is an arithmetic number, because the mean of its divisors is an integer number (5701520).

Almost surely, 2^249060987 is an apocalyptic number.

249060987 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

249060987 is a deficient number, since it is larger than the sum of its proper divisors (207060613).

249060987 is a wasteful number, since it uses less digits than its factorization.

249060987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 249060987 is about 15781.6661667899. Note that the first 3 decimals coincide. The cubic root of 249060987 is about 629.1708138921.

Subtracting from 249060987 its sum of digits (45), we obtain a palindrome (249060942).

It can be divided in two parts, 249060 and 987, that added together give a cube (250047 = 63³).

The spelling of 249060987 in words is "two hundred forty-nine million, sixty thousand, nine hundred eighty-seven".