39974830 has 16 divisors (see below), whose sum is σ = 82234080. Its totient is φ = 13705632.

The previous prime is 39974827. The next prime is 39974839. The reversal of 39974830 is 3847993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39974839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285465 + ... + 285604.

It is an arithmetic number, because the mean of its divisors is an integer number (5139630).

Almost surely, 2^39974830 is an apocalyptic number.

39974830 is an abundant number, since it is smaller than the sum of its proper divisors (42259250).

39974830 is a wasteful number, since it uses less digits than its factorization.

39974830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571083.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 39974830 is about 6322.5651439902. The cubic root of 39974830 is about 341.9234407930.

It can be divided in two parts, 39974 and 830, that added together give a palindrome (40804).

The spelling of 39974830 in words is "thirty-nine million, nine hundred seventy-four thousand, eight hundred thirty".