249530739 has 8 divisors (see below), whose sum is σ = 333404160. Its totient is φ = 166005576.

The previous prime is 249530737. The next prime is 249530753. The reversal of 249530739 is 937035942.

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

It is not a de Polignac number, because 249530739 - 2¹ = 249530737 is a prime.

It is a super-2 number, since 2×249530739² = 124531179411772242, 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 249530739.

It is not an unprimeable number, because it can be changed into a prime (249530737) 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, 85387 + ... + 88260.

It is an arithmetic number, because the mean of its divisors is an integer number (41675520).

Almost surely, 2^249530739 is an apocalyptic number.

249530739 is a deficient number, since it is larger than the sum of its proper divisors (83873421).

249530739 is a wasteful number, since it uses less digits than its factorization.

249530739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174129.

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 249530739 is about 15796.5419950064. The cubic root of 249530739 is about 629.5661235336.

The spelling of 249530739 in words is "two hundred forty-nine million, five hundred thirty thousand, seven hundred thirty-nine".