39993426 has 48 divisors (see below), whose sum is σ = 98044128. Its totient is φ = 12117600.

The previous prime is 39993419. The next prime is 39993427. The reversal of 39993426 is 62439993.

It is not an unprimeable number, because it can be changed into a prime (39993427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1606 + ... + 9086.

It is an arithmetic number, because the mean of its divisors is an integer number (2042586).

Almost surely, 2^39993426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39993426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49022064).

39993426 is an abundant number, since it is smaller than the sum of its proper divisors (58050702).

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

39993426 is a wasteful number, since it uses less digits than its factorization.

39993426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7509 (or 7497 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The square root of 39993426 is about 6324.0355786475. The cubic root of 39993426 is about 341.9764526724.

The spelling of 39993426 in words is "thirty-nine million, nine hundred ninety-three thousand, four hundred twenty-six".