39406797829 has 16 divisors (see below), whose sum is σ = 48415334400. Its totient is φ = 31318659504.

The previous prime is 39406797823. The next prime is 39406797887. The reversal of 39406797829 is 92879760493.

It is a cyclic number.

It is not a de Polignac number, because 39406797829 - 2¹⁵ = 39406765061 is a prime.

It is a super-2 number, since 2×39406797829² (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 (39406797823) 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, 3145789 + ... + 3158290.

It is an arithmetic number, because the mean of its divisors is an integer number (3025958400).

Almost surely, 2^39406797829 is an apocalyptic number.

It is an amenable number.

39406797829 is a deficient number, since it is larger than the sum of its proper divisors (9008536571).

39406797829 is a wasteful number, since it uses less digits than its factorization.

39406797829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6304152.

The product of its (nonzero) digits is 41150592, while the sum is 64.

The spelling of 39406797829 in words is "thirty-nine billion, four hundred six million, seven hundred ninety-seven thousand, eight hundred twenty-nine".