39381295421 has 24 divisors (see below), whose sum is σ = 44854758144. Its totient is φ = 34365993120.

The previous prime is 39381295417. The next prime is 39381295433. The reversal of 39381295421 is 12459218393.

It is not a de Polignac number, because 39381295421 - 2² = 39381295417 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39381295411) 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 23 ways as a sum of consecutive naturals, for example, 2276876 + ... + 2294106.

It is an arithmetic number, because the mean of its divisors is an integer number (1868948256).

Almost surely, 2^39381295421 is an apocalyptic number.

It is an amenable number.

39381295421 is a deficient number, since it is larger than the sum of its proper divisors (5473462723).

39381295421 is a wasteful number, since it uses less digits than its factorization.

39381295421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17769 (or 17750 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The spelling of 39381295421 in words is "thirty-nine billion, three hundred eighty-one million, two hundred ninety-five thousand, four hundred twenty-one".