39491493 has 8 divisors (see below), whose sum is σ = 55752768. Its totient is φ = 24778944.

The previous prime is 39491479. The next prime is 39491497. The reversal of 39491493 is 39419493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39491493 - 2¹⁶ = 39425957 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 (39491497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387121 + ... + 387222.

It is an arithmetic number, because the mean of its divisors is an integer number (6969096).

Almost surely, 2^39491493 is an apocalyptic number.

It is an amenable number.

39491493 is a deficient number, since it is larger than the sum of its proper divisors (16261275).

39491493 is a wasteful number, since it uses less digits than its factorization.

39491493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774363.

The product of its digits is 104976, while the sum is 42.

The square root of 39491493 is about 6284.2257279636. The cubic root of 39491493 is about 340.5397798535.

The spelling of 39491493 in words is "thirty-nine million, four hundred ninety-one thousand, four hundred ninety-three".