39494390 has 16 divisors (see below), whose sum is σ = 76558608. Its totient is φ = 14582496.

The previous prime is 39494321. The next prime is 39494419. The reversal of 39494390 is 9349493.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151772 + ... + 152031.

It is an arithmetic number, because the mean of its divisors is an integer number (4784913).

Almost surely, 2^39494390 is an apocalyptic number.

39494390 is a deficient number, since it is larger than the sum of its proper divisors (37064218).

39494390 is a wasteful number, since it uses less digits than its factorization.

39494390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303823.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 39494390 is about 6284.4562215040. The cubic root of 39494390 is about 340.5481067069.

The spelling of 39494390 in words is "thirty-nine million, four hundred ninety-four thousand, three hundred ninety".