39803961 has 16 divisors (see below), whose sum is σ = 55535616. Its totient is φ = 25310736.

The previous prime is 39803947. The next prime is 39803983. The reversal of 39803961 is 16930893.

It is not a de Polignac number, because 39803961 - 2²³ = 31415353 is a prime.

It is a super-2 number, since 2×39803961² = 3168710622579042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39803161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35536 + ... + 36638.

It is an arithmetic number, because the mean of its divisors is an integer number (3470976).

Almost surely, 2^39803961 is an apocalyptic number.

It is an amenable number.

39803961 is a deficient number, since it is larger than the sum of its proper divisors (15731655).

39803961 is a wasteful number, since it uses less digits than its factorization.

39803961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 39803961 is about 6309.0380407793. The cubic root of 39803961 is about 341.4355708207.

The spelling of 39803961 in words is "thirty-nine million, eight hundred three thousand, nine hundred sixty-one".