39242690 has 16 divisors (see below), whose sum is σ = 71006328. Its totient is φ = 15614976.

The previous prime is 39242689. The next prime is 39242701. The reversal of 39242690 is 9624293.

39242690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 35868121 + 3374569 = 5989^2 + 1837^2 .

It is a super-2 number, since 2×39242690² = 3079977436872200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39242690.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8237 + ... + 12096.

Almost surely, 2^39242690 is an apocalyptic number.

39242690 is a deficient number, since it is larger than the sum of its proper divisors (31763638).

39242690 is a wasteful number, since it uses less digits than its factorization.

39242690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20533.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 39242690 is about 6264.3986143923. The cubic root of 39242690 is about 339.8231202230.

The spelling of 39242690 in words is "thirty-nine million, two hundred forty-two thousand, six hundred ninety".