239925749 has 16 divisors (see below), whose sum is σ = 293374080. Its totient is φ = 191626560.

The previous prime is 239925701. The next prime is 239925769. The reversal of 239925749 is 947529932.

It is a cyclic number.

It is not a de Polignac number, because 239925749 - 2¹⁶ = 239860213 is a prime.

It is a super-2 number, since 2×239925749² = 115128730066422002, which contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 239925697 and 239925706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239925769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6674 + ... + 22899.

It is an arithmetic number, because the mean of its divisors is an integer number (18335880).

Almost surely, 2^239925749 is an apocalyptic number.

It is an amenable number.

239925749 is a deficient number, since it is larger than the sum of its proper divisors (53448331).

239925749 is a wasteful number, since it uses less digits than its factorization.

239925749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29660.

The product of its digits is 1224720, while the sum is 50.

The square root of 239925749 is about 15489.5367587285. The cubic root of 239925749 is about 621.3824070470.

The spelling of 239925749 in words is "two hundred thirty-nine million, nine hundred twenty-five thousand, seven hundred forty-nine".