39493013 has 4 divisors (see below), whose sum is σ = 45134880. Its totient is φ = 33851148.

The previous prime is 39493009. The next prime is 39493021. The reversal of 39493013 is 31039493.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31039493 = 4289 ⋅7237.

It is a cyclic number.

It is not a de Polignac number, because 39493013 - 2² = 39493009 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39493033) 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, 2820923 + ... + 2820936.

It is an arithmetic number, because the mean of its divisors is an integer number (11283720).

Almost surely, 2^39493013 is an apocalyptic number.

It is an amenable number.

39493013 is a deficient number, since it is larger than the sum of its proper divisors (5641867).

39493013 is an equidigital number, since it uses as much as digits as its factorization.

39493013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5641866.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 39493013 is about 6284.3466645308. The cubic root of 39493013 is about 340.5441488436.

The spelling of 39493013 in words is "thirty-nine million, four hundred ninety-three thousand, thirteen".