39440900 has 18 divisors (see below), whose sum is σ = 85586970. Its totient is φ = 15776320.

The previous prime is 39440873. The next prime is 39440911. The reversal of 39440900 is 904493.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 13897984 + 25542916 = 3728^2 + 5054^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197105 + ... + 197304.

Almost surely, 2^39440900 is an apocalyptic number.

It is an amenable number.

39440900 is an abundant number, since it is smaller than the sum of its proper divisors (46146070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39440900 is a wasteful number, since it uses less digits than its factorization.

39440900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394423 (or 394416 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 39440900 is about 6280.1990414317. The cubic root of 39440900 is about 340.3942945822.

The spelling of 39440900 in words is "thirty-nine million, four hundred forty thousand, nine hundred".