39739152381 has 4 divisors (see below), whose sum is σ = 52985536512. Its totient is φ = 26492768252.

The previous prime is 39739152377. The next prime is 39739152421. The reversal of 39739152381 is 18325193793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39739152381 - 2² = 39739152377 is a prime.

It is a super-2 number, since 2×39739152381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39739152301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6623192061 + ... + 6623192066.

It is an arithmetic number, because the mean of its divisors is an integer number (13246384128).

Almost surely, 2^39739152381 is an apocalyptic number.

It is an amenable number.

39739152381 is a deficient number, since it is larger than the sum of its proper divisors (13246384131).

39739152381 is a wasteful number, since it uses less digits than its factorization.

39739152381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13246384130.

The product of its digits is 1224720, while the sum is 51.

The spelling of 39739152381 in words is "thirty-nine billion, seven hundred thirty-nine million, one hundred fifty-two thousand, three hundred eighty-one".