249072385 has 16 divisors (see below), whose sum is σ = 303436800. Its totient is φ = 196238016.

The previous prime is 249072367. The next prime is 249072407. The reversal of 249072385 is 583270942.

It is a cyclic number.

It is not a de Polignac number, because 249072385 - 2²³ = 240683777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283567 + ... + 284443.

It is an arithmetic number, because the mean of its divisors is an integer number (18964800).

Almost surely, 2^249072385 is an apocalyptic number.

It is an amenable number.

249072385 is a deficient number, since it is larger than the sum of its proper divisors (54364415).

249072385 is an equidigital number, since it uses as much as digits as its factorization.

249072385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 249072385 is about 15782.0272778880. The cubic root of 249072385 is about 629.1804115140.

The spelling of 249072385 in words is "two hundred forty-nine million, seventy-two thousand, three hundred eighty-five".