190093990 has 8 divisors (see below), whose sum is σ = 342169200. Its totient is φ = 76037592.

The previous prime is 190093979. The next prime is 190094027. The reversal of 190093990 is 99390091.

190093990 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×190093990² = 72271450068240200, 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, 9504690 + ... + 9504709.

It is an arithmetic number, because the mean of its divisors is an integer number (42771150).

Almost surely, 2^190093990 is an apocalyptic number.

190093990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190093990 is a deficient number, since it is larger than the sum of its proper divisors (152075210).

190093990 is a wasteful number, since it uses less digits than its factorization.

190093990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19009406.

The product of its (nonzero) digits is 19683, while the sum is 40.

The square root of 190093990 is about 13787.4577061908. The cubic root of 190093990 is about 574.9844885545.

The spelling of 190093990 in words is "one hundred ninety million, ninety-three thousand, nine hundred ninety".