39715973 has 4 divisors (see below), whose sum is σ = 43326528. Its totient is φ = 36105420.

The previous prime is 39715957. The next prime is 39716011. The reversal of 39715973 is 37951793.

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 39715973 - 2⁴ = 39715957 is a prime.

It is a super-2 number, since 2×39715973² = 3154717022673458, 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 (39715903) 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, 1805261 + ... + 1805282.

It is an arithmetic number, because the mean of its divisors is an integer number (10831632).

Almost surely, 2^39715973 is an apocalyptic number.

It is an amenable number.

39715973 is a deficient number, since it is larger than the sum of its proper divisors (3610555).

39715973 is a wasteful number, since it uses less digits than its factorization.

39715973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610554.

The product of its digits is 178605, while the sum is 44.

The square root of 39715973 is about 6302.0610120817. The cubic root of 39715973 is about 341.1838002605.

The spelling of 39715973 in words is "thirty-nine million, seven hundred fifteen thousand, nine hundred seventy-three".