249931693 has 8 divisors (see below), whose sum is σ = 272768256. Its totient is φ = 227114400.

The previous prime is 249931691. The next prime is 249931697. The reversal of 249931693 is 396139942.

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 249931693 - 2¹ = 249931691 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249931691) 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, 42948 + ... + 48418.

It is an arithmetic number, because the mean of its divisors is an integer number (34096032).

Almost surely, 2^249931693 is an apocalyptic number.

It is an amenable number.

249931693 is a deficient number, since it is larger than the sum of its proper divisors (22836563).

249931693 is a wasteful number, since it uses less digits than its factorization.

249931693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9635.

The product of its digits is 314928, while the sum is 46.

The square root of 249931693 is about 15809.2280962734. The cubic root of 249931693 is about 629.9031454365.

The spelling of 249931693 in words is "two hundred forty-nine million, nine hundred thirty-one thousand, six hundred ninety-three".