39102661 has 4 divisors (see below), whose sum is σ = 42110572. Its totient is φ = 36094752.

The previous prime is 39102653. The next prime is 39102667. The reversal of 39102661 is 16620193.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22982436 + 16120225 = 4794^2 + 4015^2 .

It is a cyclic number.

It is not a de Polignac number, because 39102661 - 2³ = 39102653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39102667) by changing a digit.

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, 1503936 + ... + 1503961.

It is an arithmetic number, because the mean of its divisors is an integer number (10527643).

Almost surely, 2^39102661 is an apocalyptic number.

It is an amenable number.

39102661 is a deficient number, since it is larger than the sum of its proper divisors (3007911).

39102661 is a wasteful number, since it uses less digits than its factorization.

39102661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007910.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 39102661 is about 6253.2120546164. The cubic root of 39102661 is about 339.4184435543.

The spelling of 39102661 in words is "thirty-nine million, one hundred two thousand, six hundred sixty-one".