39494438 has 4 divisors (see below), whose sum is σ = 59241660. Its totient is φ = 19747218.

The previous prime is 39494437. The next prime is 39494443. The reversal of 39494438 is 83449493.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39494437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9873608 + ... + 9873611.

It is an arithmetic number, because the mean of its divisors is an integer number (14810415).

Almost surely, 2^39494438 is an apocalyptic number.

39494438 is a deficient number, since it is larger than the sum of its proper divisors (19747222).

39494438 is a wasteful number, since it uses less digits than its factorization.

39494438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19747221.

The product of its digits is 373248, while the sum is 44.

The square root of 39494438 is about 6284.4600404490. The cubic root of 39494438 is about 340.5482446700.

The spelling of 39494438 in words is "thirty-nine million, four hundred ninety-four thousand, four hundred thirty-eight".