39712990 has 8 divisors (see below), whose sum is σ = 71483400. Its totient is φ = 15885192.

The previous prime is 39712987. The next prime is 39712991. The reversal of 39712990 is 9921793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39712991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1985640 + ... + 1985659.

It is an arithmetic number, because the mean of its divisors is an integer number (8935425).

Almost surely, 2^39712990 is an apocalyptic number.

39712990 is a deficient number, since it is larger than the sum of its proper divisors (31770410).

39712990 is a wasteful number, since it uses less digits than its factorization.

39712990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971306.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 39712990 is about 6301.8243390307. The cubic root of 39712990 is about 341.1752581326.

The spelling of 39712990 in words is "thirty-nine million, seven hundred twelve thousand, nine hundred ninety".