39938850 has 144 divisors (see below), whose sum is σ = 126896640. Its totient is φ = 8812800.

The previous prime is 39938827. The next prime is 39938867. The reversal of 39938850 is 5883993.

It is a super-2 number, since 2×39938850² = 3190223478645000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 39938796 and 39938805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 97446 + ... + 97854.

Almost surely, 2^39938850 is an apocalyptic number.

39938850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 39938850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63448320).

39938850 is an abundant number, since it is smaller than the sum of its proper divisors (86957790).

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

39938850 is a wasteful number, since it uses less digits than its factorization.

39938850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 39938850 is about 6319.7191393289. The cubic root of 39938850 is about 341.8208254036.

The spelling of 39938850 in words is "thirty-nine million, nine hundred thirty-eight thousand, eight hundred fifty".