39960425 has 12 divisors (see below), whose sum is σ = 49871436. Its totient is φ = 31761600.

The previous prime is 39960413. The next prime is 39960461. The reversal of 39960425 is 52406993.

It can be written as a sum of positive squares in 6 ways, for example, as 1570009 + 38390416 = 1253^2 + 6196^2 .

It is not a de Polignac number, because 39960425 - 2¹⁴ = 39944041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1166 + ... + 9015.

It is an arithmetic number, because the mean of its divisors is an integer number (4155953).

Almost surely, 2^39960425 is an apocalyptic number.

It is an amenable number.

39960425 is a deficient number, since it is larger than the sum of its proper divisors (9911011).

39960425 is a wasteful number, since it uses less digits than its factorization.

39960425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10348 (or 10343 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 39960425 is about 6321.4258676346. The cubic root of 39960425 is about 341.8823649551.

The spelling of 39960425 in words is "thirty-nine million, nine hundred sixty thousand, four hundred twenty-five".