39542644 has 12 divisors (see below), whose sum is σ = 69289668. Its totient is φ = 19745600.

The previous prime is 39542641. The next prime is 39542647. The reversal of 39542644 is 44624593.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (39542641) and next prime (39542647).

It can be written as a sum of positive squares in 2 ways, for example, as 17808400 + 21734244 = 4220^2 + 4662^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39542641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2737 + ... + 9304.

It is an arithmetic number, because the mean of its divisors is an integer number (5774139).

Almost surely, 2^39542644 is an apocalyptic number.

It is an amenable number.

39542644 is a deficient number, since it is larger than the sum of its proper divisors (29747024).

39542644 is a wasteful number, since it uses less digits than its factorization.

39542644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12866 (or 12864 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 39542644 is about 6288.2942043133. The cubic root of 39542644 is about 340.6867434464.

It can be divided in two parts, 39542 and 644, that added together give a triangular number (40186 = T₂₈₃).

The spelling of 39542644 in words is "thirty-nine million, five hundred forty-two thousand, six hundred forty-four".