39497213 has 4 divisors (see below), whose sum is σ = 45139680. Its totient is φ = 33854748.

The previous prime is 39497209. The next prime is 39497251. The reversal of 39497213 is 31279493.

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 39497213 - 2² = 39497209 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 (39497203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2821223 + ... + 2821236.

It is an arithmetic number, because the mean of its divisors is an integer number (11284920).

Almost surely, 2^39497213 is an apocalyptic number.

It is an amenable number.

39497213 is a deficient number, since it is larger than the sum of its proper divisors (5642467).

39497213 is an equidigital number, since it uses as much as digits as its factorization.

39497213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5642466.

The product of its digits is 40824, while the sum is 38.

The square root of 39497213 is about 6284.6808192620. The cubic root of 39497213 is about 340.5562204702.

The spelling of 39497213 in words is "thirty-nine million, four hundred ninety-seven thousand, two hundred thirteen".