39038661 has 12 divisors (see below), whose sum is σ = 56717388. Its totient is φ = 25874304.

The previous prime is 39038653. The next prime is 39038729. The reversal of 39038661 is 16683093.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26718561 + 12320100 = 5169^2 + 3510^2 .

It is not a de Polignac number, because 39038661 - 2³ = 39038653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39038651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10980 + ... + 14093.

It is an arithmetic number, because the mean of its divisors is an integer number (4726449).

Almost surely, 2^39038661 is an apocalyptic number.

It is an amenable number.

39038661 is a deficient number, since it is larger than the sum of its proper divisors (17678727).

39038661 is a wasteful number, since it uses less digits than its factorization.

39038661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25252 (or 25249 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 39038661 is about 6248.0925889426. The cubic root of 39038661 is about 339.2331650935.

The spelling of 39038661 in words is "thirty-nine million, thirty-eight thousand, six hundred sixty-one".