39540404 has 24 divisors (see below), whose sum is σ = 72885120. Its totient is φ = 18732384.

The previous prime is 39540373. The next prime is 39540409. The reversal of 39540404 is 40404593.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39540409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8057 + ... + 11999.

It is an arithmetic number, because the mean of its divisors is an integer number (3036880).

Almost surely, 2^39540404 is an apocalyptic number.

It is an amenable number.

39540404 is a deficient number, since it is larger than the sum of its proper divisors (33344716).

39540404 is a wasteful number, since it uses less digits than its factorization.

39540404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4079 (or 4077 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 39540404 is about 6288.1160930759. The cubic root of 39540404 is about 340.6803102844.

Adding to 39540404 its reverse (40404593), we get a palindrome (79944997).

The spelling of 39540404 in words is "thirty-nine million, five hundred forty thousand, four hundred four".