3937887394 has 32 divisors (see below), whose sum is σ = 6920597376. Its totient is φ = 1645246080.

The previous prime is 3937887347. The next prime is 3937887397. The reversal of 3937887394 is 4937887393.

It is a super-2 number, since 2×3937887394² = 31013914255648222472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3937887397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1466377 + ... + 1469059.

It is an arithmetic number, because the mean of its divisors is an integer number (216268668).

Almost surely, 2^3937887394 is an apocalyptic number.

3937887394 is a deficient number, since it is larger than the sum of its proper divisors (2982709982).

3937887394 is a wasteful number, since it uses less digits than its factorization.

3937887394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290.

The product of its digits is 27433728, while the sum is 61.

The square root of 3937887394 is about 62752.5887434136. The cubic root of 3937887394 is about 1579.1416843785.

Subtracting 3937887394 from its reverse (4937887393), we obtain a palindrome (999999999).

The spelling of 3937887394 in words is "three billion, nine hundred thirty-seven million, eight hundred eighty-seven thousand, three hundred ninety-four".