39740479 has 4 divisors (see below), whose sum is σ = 40814584. Its totient is φ = 38666376.

The previous prime is 39740473. The next prime is 39740497. The reversal of 39740479 is 97404793.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97404793 = 23 ⋅4234991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39740479 is a prime.

It is a super-2 number, since 2×39740479² = 3158611342298882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39740473) 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, 536997 + ... + 537070.

It is an arithmetic number, because the mean of its divisors is an integer number (10203646).

Almost surely, 2^39740479 is an apocalyptic number.

39740479 is a deficient number, since it is larger than the sum of its proper divisors (1074105).

39740479 is a wasteful number, since it uses less digits than its factorization.

39740479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074104.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 39740479 is about 6304.0049968254. The cubic root of 39740479 is about 341.2539595313.

The spelling of 39740479 in words is "thirty-nine million, seven hundred forty thousand, four hundred seventy-nine".