3940400793 has 24 divisors (see below), whose sum is σ = 6204391104. Its totient is φ = 2179012320.

The previous prime is 3940400771. The next prime is 3940400809. The reversal of 3940400793 is 3970040493.

It is not a de Polignac number, because 3940400793 - 2⁹ = 3940400281 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3940402793) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77446 + ... + 117807.

It is an arithmetic number, because the mean of its divisors is an integer number (258516296).

Almost surely, 2^3940400793 is an apocalyptic number.

It is an amenable number.

3940400793 is a deficient number, since it is larger than the sum of its proper divisors (2263990311).

3940400793 is a wasteful number, since it uses less digits than its factorization.

3940400793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195325 (or 195294 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 3940400793 is about 62772.6118064240. The cubic root of 3940400793 is about 1579.4775809825.

The spelling of 3940400793 in words is "three billion, nine hundred forty million, four hundred thousand, seven hundred ninety-three".