39897413 has 4 divisors (see below), whose sum is σ = 40027680. Its totient is φ = 39767148.

The previous prime is 39897409. The next prime is 39897427. The reversal of 39897413 is 31479893.

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 a cyclic number.

It is not a de Polignac number, because 39897413 - 2² = 39897409 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 (39897443) 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, 64673 + ... + 65286.

It is an arithmetic number, because the mean of its divisors is an integer number (10006920).

Almost surely, 2^39897413 is an apocalyptic number.

It is an amenable number.

39897413 is a deficient number, since it is larger than the sum of its proper divisors (130267).

39897413 is a wasteful number, since it uses less digits than its factorization.

39897413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130266.

The product of its digits is 163296, while the sum is 44.

The square root of 39897413 is about 6316.4398991837. The cubic root of 39897413 is about 341.7025701975.

It can be divided in two parts, 39897 and 413, that multiplied together give a palindrome (16477461).

The spelling of 39897413 in words is "thirty-nine million, eight hundred ninety-seven thousand, four hundred thirteen".