39889677 has 4 divisors (see below), whose sum is σ = 53186240. Its totient is φ = 26593116.

The previous prime is 39889657. The next prime is 39889691. The reversal of 39889677 is 77698893.

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 39889677 - 2¹⁵ = 39856909 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 (39889637) 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, 6648277 + ... + 6648282.

It is an arithmetic number, because the mean of its divisors is an integer number (13296560).

Almost surely, 2^39889677 is an apocalyptic number.

It is an amenable number.

39889677 is a deficient number, since it is larger than the sum of its proper divisors (13296563).

39889677 is a wasteful number, since it uses less digits than its factorization.

39889677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13296562.

The product of its digits is 4572288, while the sum is 57.

The square root of 39889677 is about 6315.8274992276. The cubic root of 39889677 is about 341.6804837032.

The spelling of 39889677 in words is "thirty-nine million, eight hundred eighty-nine thousand, six hundred seventy-seven".