39661494 has 8 divisors (see below), whose sum is σ = 79323000. Its totient is φ = 13220496.

The previous prime is 39661483. The next prime is 39661537. The reversal of 39661494 is 49416693.

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

39661494 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3305119 + ... + 3305130.

It is an arithmetic number, because the mean of its divisors is an integer number (9915375).

Almost surely, 2^39661494 is an apocalyptic number.

39661494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39661494 is a wasteful number, since it uses less digits than its factorization.

39661494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6610254.

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

The square root of 39661494 is about 6297.7372126820. The cubic root of 39661494 is about 341.0277265519.

It can be divided in two parts, 3966 and 1494, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 39661494 in words is "thirty-nine million, six hundred sixty-one thousand, four hundred ninety-four".