39247973 has 4 divisors (see below), whose sum is σ = 39281088. Its totient is φ = 39214860.

The previous prime is 39247969. The next prime is 39247979. The reversal of 39247973 is 37974293.

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 39247973 - 2² = 39247969 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 (39247979) 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, 14711 + ... + 17172.

It is an arithmetic number, because the mean of its divisors is an integer number (9820272).

Almost surely, 2^39247973 is an apocalyptic number.

It is an amenable number.

39247973 is a deficient number, since it is larger than the sum of its proper divisors (33115).

39247973 is a wasteful number, since it uses less digits than its factorization.

39247973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33114.

The product of its digits is 285768, while the sum is 44.

The square root of 39247973 is about 6264.8202687707. The cubic root of 39247973 is about 339.8383689652.

The spelling of 39247973 in words is "thirty-nine million, two hundred forty-seven thousand, nine hundred seventy-three".