39494661 has 4 divisors (see below), whose sum is σ = 52659552. Its totient is φ = 26329772.

The previous prime is 39494641. The next prime is 39494671. The reversal of 39494661 is 16649493.

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 39494661 - 2¹⁰ = 39493637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39494641) 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, 6582441 + ... + 6582446.

It is an arithmetic number, because the mean of its divisors is an integer number (13164888).

Almost surely, 2^39494661 is an apocalyptic number.

It is an amenable number.

39494661 is a deficient number, since it is larger than the sum of its proper divisors (13164891).

39494661 is a wasteful number, since it uses less digits than its factorization.

39494661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13164890.

The product of its digits is 139968, while the sum is 42.

The square root of 39494661 is about 6284.4777826006. The cubic root of 39494661 is about 340.5488856220.

The spelling of 39494661 in words is "thirty-nine million, four hundred ninety-four thousand, six hundred sixty-one".