39979743 has 8 divisors (see below), whose sum is σ = 56112000. Its totient is φ = 25250328.

The previous prime is 39979741. The next prime is 39979747. The reversal of 39979743 is 34797993.

39979743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 39979743 - 2¹ = 39979741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39979741) 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 7 ways as a sum of consecutive naturals, for example, 350643 + ... + 350756.

It is an arithmetic number, because the mean of its divisors is an integer number (7014000).

Almost surely, 2^39979743 is an apocalyptic number.

39979743 is a deficient number, since it is larger than the sum of its proper divisors (16132257).

39979743 is a wasteful number, since it uses less digits than its factorization.

39979743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701421.

The product of its digits is 1285956, while the sum is 51.

The square root of 39979743 is about 6322.9536610670. The cubic root of 39979743 is about 341.9374479491.

The spelling of 39979743 in words is "thirty-nine million, nine hundred seventy-nine thousand, seven hundred forty-three".