39961490 has 8 divisors (see below), whose sum is σ = 71930700. Its totient is φ = 15984592.

The previous prime is 39961489. The next prime is 39961531. The reversal of 39961490 is 9416993.

It can be written as a sum of positive squares in 2 ways, for example, as 39677401 + 284089 = 6299^2 + 533^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1998065 + ... + 1998084.

Almost surely, 2^39961490 is an apocalyptic number.

39961490 is a deficient number, since it is larger than the sum of its proper divisors (31969210).

39961490 is a wasteful number, since it uses less digits than its factorization.

39961490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996156.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 39961490 is about 6321.5101043975. The cubic root of 39961490 is about 341.8854021391.

The spelling of 39961490 in words is "thirty-nine million, nine hundred sixty-one thousand, four hundred ninety".