39479489 has 4 divisors (see below), whose sum is σ = 45119424. Its totient is φ = 33839556.

The previous prime is 39479471. The next prime is 39479507. The reversal of 39479489 is 98497493.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (39479471) and next prime (39479507).

It is a cyclic number.

It is not a de Polignac number, because 39479489 - 2⁸ = 39479233 is a prime.

It is a super-2 number, since 2×39479489² = 3117260103402242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39479489.

It is not an unprimeable number, because it can be changed into a prime (39479459) 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, 2819957 + ... + 2819970.

It is an arithmetic number, because the mean of its divisors is an integer number (11279856).

Almost surely, 2^39479489 is an apocalyptic number.

It is an amenable number.

39479489 is a deficient number, since it is larger than the sum of its proper divisors (5639935).

39479489 is an equidigital number, since it uses as much as digits as its factorization.

39479489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5639934.

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

The square root of 39479489 is about 6283.2705655574. The cubic root of 39479489 is about 340.5052723899.

The spelling of 39479489 in words is "thirty-nine million, four hundred seventy-nine thousand, four hundred eighty-nine".