39749479 has 8 divisors (see below), whose sum is σ = 49557888. Its totient is φ = 30973560.

The previous prime is 39749473. The next prime is 39749503. The reversal of 39749479 is 97494793.

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

It is a cyclic number.

It is not a de Polignac number, because 39749479 - 2⁷ = 39749351 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 (39749473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258037 + ... + 258190.

It is an arithmetic number, because the mean of its divisors is an integer number (6194736).

Almost surely, 2^39749479 is an apocalyptic number.

39749479 is a deficient number, since it is larger than the sum of its proper divisors (9808409).

39749479 is a wasteful number, since it uses less digits than its factorization.

39749479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516245.

The product of its digits is 1714608, while the sum is 52.

The square root of 39749479 is about 6304.7187883362. The cubic root of 39749479 is about 341.2797187730.

The spelling of 39749479 in words is "thirty-nine million, seven hundred forty-nine thousand, four hundred seventy-nine".