3923073639 has 6 divisors (see below), whose sum is σ = 5666661936. Its totient is φ = 2615382420.

The previous prime is 3923073611. The next prime is 3923073647. The reversal of 3923073639 is 9363703293.

3923073639 is a `hidden beast` number, since 3 + 9 + 2 + 3 + 0 + 7 + 3 + 639 = 666.

It is not a de Polignac number, because 3923073639 - 2⁸ = 3923073383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3923073594 and 3923073603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3923073239) 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 5 ways as a sum of consecutive naturals, for example, 217948527 + ... + 217948544.

It is an arithmetic number, because the mean of its divisors is an integer number (944443656).

Almost surely, 2^3923073639 is an apocalyptic number.

3923073639 is a deficient number, since it is larger than the sum of its proper divisors (1743588297).

3923073639 is a wasteful number, since it uses less digits than its factorization.

3923073639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435897077 (or 435897074 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 45.

The square root of 3923073639 is about 62634.4445093912. Note that the first 3 decimals coincide. The cubic root of 3923073639 is about 1577.1590296502.

The spelling of 3923073639 in words is "three billion, nine hundred twenty-three million, seventy-three thousand, six hundred thirty-nine".