39317661 has 6 divisors (see below), whose sum is σ = 56792190. Its totient is φ = 26211768.

The previous prime is 39317653. The next prime is 39317671. The reversal of 39317661 is 16671393.

It can be written as a sum of positive squares in only one way, i.e., 39312900 + 4761 = 6270^2 + 69^2 .

It is not a de Polignac number, because 39317661 - 2³ = 39317653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39317671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2184306 + ... + 2184323.

It is an arithmetic number, because the mean of its divisors is an integer number (9465365).

Almost surely, 2^39317661 is an apocalyptic number.

It is an amenable number.

39317661 is a deficient number, since it is larger than the sum of its proper divisors (17474529).

39317661 is a wasteful number, since it uses less digits than its factorization.

39317661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368635 (or 4368632 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 39317661 is about 6270.3796535776. The cubic root of 39317661 is about 340.0393870172.

The spelling of 39317661 in words is "thirty-nine million, three hundred seventeen thousand, six hundred sixty-one".