39406898644 has 24 divisors (see below), whose sum is σ = 70683701760. Its totient is φ = 19214583456.

The previous prime is 39406898621. The next prime is 39406898653. The reversal of 39406898644 is 44689860493.

39406898644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326284 + ... + 430435.

It is an arithmetic number, because the mean of its divisors is an integer number (2945154240).

Almost surely, 2^39406898644 is an apocalyptic number.

It is an amenable number.

39406898644 is a deficient number, since it is larger than the sum of its proper divisors (31276803116).

39406898644 is a wasteful number, since it uses less digits than its factorization.

39406898644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757047 (or 757045 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 61.

The spelling of 39406898644 in words is "thirty-nine billion, four hundred six million, eight hundred ninety-eight thousand, six hundred forty-four".