39749977 has 4 divisors (see below), whose sum is σ = 39765456. Its totient is φ = 39734500.

The previous prime is 39749971. The next prime is 39750013. The reversal of 39749977 is 77994793.

39749977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 39749977 - 2⁷ = 39749849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39749971) 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 3 ways as a sum of consecutive naturals, for example, 2863 + ... + 9364.

It is an arithmetic number, because the mean of its divisors is an integer number (9941364).

Almost surely, 2^39749977 is an apocalyptic number.

It is an amenable number.

39749977 is a deficient number, since it is larger than the sum of its proper divisors (15479).

39749977 is a wasteful number, since it uses less digits than its factorization.

39749977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15478.

The product of its digits is 3000564, while the sum is 55.

The square root of 39749977 is about 6304.7582824403. The cubic root of 39749977 is about 341.2811440042.

The spelling of 39749977 in words is "thirty-nine million, seven hundred forty-nine thousand, nine hundred seventy-seven".