190039390 has 8 divisors (see below), whose sum is σ = 342070920. Its totient is φ = 76015752.

The previous prime is 190039361. The next prime is 190039411. The reversal of 190039390 is 93930091.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×190039390² = 72229939503144200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9501960 + ... + 9501979.

It is an arithmetic number, because the mean of its divisors is an integer number (42758865).

Almost surely, 2^190039390 is an apocalyptic number.

190039390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190039390 is a deficient number, since it is larger than the sum of its proper divisors (152031530).

190039390 is a wasteful number, since it uses less digits than its factorization.

190039390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19003946.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 190039390 is about 13785.4775035180. The cubic root of 190039390 is about 574.9294330539.

The spelling of 190039390 in words is "one hundred ninety million, thirty-nine thousand, three hundred ninety".