39440980 has 12 divisors (see below), whose sum is σ = 82826100. Its totient is φ = 15776384.

The previous prime is 39440971. The next prime is 39440983. The reversal of 39440980 is 8904493.

It can be written as a sum of positive squares in 2 ways, for example, as 25765776 + 13675204 = 5076^2 + 3698^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39440983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 986005 + ... + 986044.

It is an arithmetic number, because the mean of its divisors is an integer number (6902175).

Almost surely, 2^39440980 is an apocalyptic number.

It is an amenable number.

39440980 is an abundant number, since it is smaller than the sum of its proper divisors (43385120).

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

39440980 is a wasteful number, since it uses less digits than its factorization.

39440980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972058 (or 1972056 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 39440980 is about 6280.2054106534. The cubic root of 39440980 is about 340.3945247285.

The spelling of 39440980 in words is "thirty-nine million, four hundred forty thousand, nine hundred eighty".