249964087 has 4 divisors (see below), whose sum is σ = 250561080. Its totient is φ = 249367096.

The previous prime is 249964063. The next prime is 249964093. The reversal of 249964087 is 780469942.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 249964087 - 2¹¹ = 249962039 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 249964087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249964007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297868 + ... + 298705.

It is an arithmetic number, because the mean of its divisors is an integer number (62640270).

Almost surely, 2^249964087 is an apocalyptic number.

249964087 is a deficient number, since it is larger than the sum of its proper divisors (596993).

249964087 is an equidigital number, since it uses as much as digits as its factorization.

249964087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596992.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 249964087 is about 15810.2525912776. The cubic root of 249964087 is about 629.9303584731.

The spelling of 249964087 in words is "two hundred forty-nine million, nine hundred sixty-four thousand, eighty-seven".