39542493 has 8 divisors (see below), whose sum is σ = 55824768. Its totient is φ = 24810944.

The previous prime is 39542483. The next prime is 39542501. The reversal of 39542493 is 39424593.

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

It is a cyclic number.

It is not a de Polignac number, because 39542493 - 2⁹ = 39541981 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 (39542483) 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 7 ways as a sum of consecutive naturals, for example, 387621 + ... + 387722.

It is an arithmetic number, because the mean of its divisors is an integer number (6978096).

Almost surely, 2^39542493 is an apocalyptic number.

It is an amenable number.

39542493 is a deficient number, since it is larger than the sum of its proper divisors (16282275).

39542493 is a wasteful number, since it uses less digits than its factorization.

39542493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775363.

The product of its digits is 116640, while the sum is 39.

The square root of 39542493 is about 6288.2821978661. The cubic root of 39542493 is about 340.6863097900.

The spelling of 39542493 in words is "thirty-nine million, five hundred forty-two thousand, four hundred ninety-three".