39190989 has 4 divisors (see below), whose sum is σ = 52254656. Its totient is φ = 26127324.

The previous prime is 39190979. The next prime is 39191003. The reversal of 39190989 is 98909193.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 39190989 - 2⁴ = 39190973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39190969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6531829 + ... + 6531834.

It is an arithmetic number, because the mean of its divisors is an integer number (13063664).

Almost surely, 2^39190989 is an apocalyptic number.

It is an amenable number.

39190989 is a deficient number, since it is larger than the sum of its proper divisors (13063667).

39190989 is a wasteful number, since it uses less digits than its factorization.

39190989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13063666.

The product of its (nonzero) digits is 157464, while the sum is 48.

The square root of 39190989 is about 6260.2706810489. The cubic root of 39190989 is about 339.6738192415.

The spelling of 39190989 in words is "thirty-nine million, one hundred ninety thousand, nine hundred eighty-nine".