39444380 has 24 divisors (see below), whose sum is σ = 87193680. Its totient is φ = 14947200.

The previous prime is 39444367. The next prime is 39444401. The reversal of 39444380 is 8344493.

It is a super-2 number, since 2×39444380² = 3111718227168800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39444380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51521 + ... + 52280.

It is an arithmetic number, because the mean of its divisors is an integer number (3633070).

Almost surely, 2^39444380 is an apocalyptic number.

It is an amenable number.

39444380 is an abundant number, since it is smaller than the sum of its proper divisors (47749300).

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

39444380 is a wasteful number, since it uses less digits than its factorization.

39444380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103829 (or 103827 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 39444380 is about 6280.4760966029. The cubic root of 39444380 is about 340.4043056562.

The spelling of 39444380 in words is "thirty-nine million, four hundred forty-four thousand, three hundred eighty".