39506990 has 32 divisors (see below), whose sum is σ = 74844000. Its totient is φ = 14992768.

The previous prime is 39506983. The next prime is 39506993. The reversal of 39506990 is 9960593.

It is a happy number.

39506990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39506993) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15956 + ... + 18264.

It is an arithmetic number, because the mean of its divisors is an integer number (2338875).

Almost surely, 2^39506990 is an apocalyptic number.

39506990 is a deficient number, since it is larger than the sum of its proper divisors (35337010).

39506990 is a wasteful number, since it uses less digits than its factorization.

39506990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 39506990 is about 6285.4586149302. The cubic root of 39506990 is about 340.5843181782.

The spelling of 39506990 in words is "thirty-nine million, five hundred six thousand, nine hundred ninety".