249238535839 has 8 divisors (see below), whose sum is σ = 263553575040. Its totient is φ = 235315689600.

The previous prime is 249238535827. The next prime is 249238535851. The reversal of 249238535839 is 938535832942.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (249238535827) and next prime (249238535851).

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 249238535839 - 2⁵ = 249238535807 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 (249238535869) 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, 98046934 + ... + 98049475.

It is an arithmetic number, because the mean of its divisors is an integer number (32944196880).

Almost surely, 2^249238535839 is an apocalyptic number.

249238535839 is a deficient number, since it is larger than the sum of its proper divisors (14315039201).

249238535839 is a wasteful number, since it uses less digits than its factorization.

249238535839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196096481.

The product of its digits is 55987200, while the sum is 61.

The spelling of 249238535839 in words is "two hundred forty-nine billion, two hundred thirty-eight million, five hundred thirty-five thousand, eight hundred thirty-nine".