39998190 has 16 divisors (see below), whose sum is σ = 95995728. Its totient is φ = 10666176.

The previous prime is 39998177. The next prime is 39998197. The reversal of 39998190 is 9189993.

39998190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×39998190² = 3199710406552200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39998197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666607 + ... + 666666.

It is an arithmetic number, because the mean of its divisors is an integer number (5999733).

Almost surely, 2^39998190 is an apocalyptic number.

39998190 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39998190 is an abundant number, since it is smaller than the sum of its proper divisors (55997538).

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

39998190 is a wasteful number, since it uses less digits than its factorization.

39998190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333283.

The product of its (nonzero) digits is 157464, while the sum is 48.

The square root of 39998190 is about 6324.4122256539. The cubic root of 39998190 is about 341.9900308301.

It can be divided in two parts, 399 and 98190, that added together give a palindrome (98589).

The spelling of 39998190 in words is "thirty-nine million, nine hundred ninety-eight thousand, one hundred ninety".