39925230749 has 8 divisors (see below), whose sum is σ = 40341274680. Its totient is φ = 39509277696.

The previous prime is 39925230721. The next prime is 39925230769. The reversal of 39925230749 is 94703252993.

It can be written as a sum of positive squares in 4 ways, for example, as 17710818724 + 22214412025 = 133082^2 + 149045^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39925230749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39925230749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39925230769) 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, 1201247 + ... + 1234035.

It is an arithmetic number, because the mean of its divisors is an integer number (5042659335).

Almost surely, 2^39925230749 is an apocalyptic number.

It is an amenable number.

39925230749 is a deficient number, since it is larger than the sum of its proper divisors (416043931).

39925230749 is a wasteful number, since it uses less digits than its factorization.

39925230749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45439.

The product of its (nonzero) digits is 3674160, while the sum is 53.

The spelling of 39925230749 in words is "thirty-nine billion, nine hundred twenty-five million, two hundred thirty thousand, seven hundred forty-nine".