39449879 has 4 divisors (see below), whose sum is σ = 45085584. Its totient is φ = 33814176.

The previous prime is 39449863. The next prime is 39449897. The reversal of 39449879 is 97894493.

It is a happy number.

39449879 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39449879 - 2⁴ = 39449863 is a prime.

It is a super-2 number, since 2×39449879² = 3112585906229282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39449879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39449849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2817842 + ... + 2817855.

It is an arithmetic number, because the mean of its divisors is an integer number (11271396).

Almost surely, 2^39449879 is an apocalyptic number.

39449879 is a deficient number, since it is larger than the sum of its proper divisors (5635705).

39449879 is an equidigital number, since it uses as much as digits as its factorization.

39449879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5635704.

The product of its digits is 1959552, while the sum is 53.

The square root of 39449879 is about 6280.9138666280. The cubic root of 39449879 is about 340.4201236790.

The spelling of 39449879 in words is "thirty-nine million, four hundred forty-nine thousand, eight hundred seventy-nine".