249430161 has 8 divisors (see below), whose sum is σ = 335682144. Its totient is φ = 164732480.

The previous prime is 249430141. The next prime is 249430169. The reversal of 249430161 is 161034942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249430161 - 2⁷ = 249430033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249430169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388200 + ... + 388841.

It is an arithmetic number, because the mean of its divisors is an integer number (41960268).

Almost surely, 2^249430161 is an apocalyptic number.

It is an amenable number.

249430161 is a deficient number, since it is larger than the sum of its proper divisors (86251983).

249430161 is a wasteful number, since it uses less digits than its factorization.

249430161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777151.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 249430161 is about 15793.3581292897. The cubic root of 249430161 is about 629.4815260591.

The spelling of 249430161 in words is "two hundred forty-nine million, four hundred thirty thousand, one hundred sixty-one".