39860746381 has 4 divisors (see below), whose sum is σ = 39881179264. Its totient is φ = 39840313500.

The previous prime is 39860746369. The next prime is 39860746397. The reversal of 39860746381 is 18364706893.

It is a happy number.

39860746381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 39860746381 - 2⁵ = 39860746349 is a prime.

It is a super-2 number, since 2×39860746381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39860746351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10213515 + ... + 10217416.

It is an arithmetic number, because the mean of its divisors is an integer number (9970294816).

Almost surely, 2^39860746381 is an apocalyptic number.

It is an amenable number.

39860746381 is a deficient number, since it is larger than the sum of its proper divisors (20432883).

39860746381 is a wasteful number, since it uses less digits than its factorization.

39860746381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20432882.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 39860746381 in words is "thirty-nine billion, eight hundred sixty million, seven hundred forty-six thousand, three hundred eighty-one".