249070389 has 4 divisors (see below), whose sum is σ = 332093856. Its totient is φ = 166046924.

The previous prime is 249070351. The next prime is 249070391. The reversal of 249070389 is 983070942.

249070389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249070389 is a prime.

It is a super-2 number, since 2×249070389² = 124072117353222642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 249070389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249070189) 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, 41511729 + ... + 41511734.

It is an arithmetic number, because the mean of its divisors is an integer number (83023464).

Almost surely, 2^249070389 is an apocalyptic number.

It is an amenable number.

249070389 is a deficient number, since it is larger than the sum of its proper divisors (83023467).

249070389 is an equidigital number, since it uses as much as digits as its factorization.

249070389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83023466.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 249070389 is about 15781.9640412719. The cubic root of 249070389 is about 629.1787308146.

The spelling of 249070389 in words is "two hundred forty-nine million, seventy thousand, three hundred eighty-nine".