39960740 has 24 divisors (see below), whose sum is σ = 86187192. Its totient is φ = 15552000.

The previous prime is 39960737. The next prime is 39960749. The reversal of 39960740 is 4706993.

It can be written as a sum of positive squares in 4 ways, for example, as 6041764 + 33918976 = 2458^2 + 5824^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39960694 and 39960703.

It is not an unprimeable number, because it can be changed into a prime (39960749) 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, 26261 + ... + 27740.

It is an arithmetic number, because the mean of its divisors is an integer number (3591133).

Almost surely, 2^39960740 is an apocalyptic number.

It is an amenable number.

39960740 is an abundant number, since it is smaller than the sum of its proper divisors (46226452).

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

39960740 is a wasteful number, since it uses less digits than its factorization.

39960740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54047 (or 54045 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 39960740 is about 6321.4507828504. The cubic root of 39960740 is about 341.8832632828.

The spelling of 39960740 in words is "thirty-nine million, nine hundred sixty thousand, seven hundred forty".