190928239 has 2 divisors, whose sum is σ = 190928240. Its totient is φ = 190928238.

The previous prime is 190928233. The next prime is 190928249. The reversal of 190928239 is 932829091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190928239 - 2⁹ = 190927727 is a prime.

It is a super-2 number, since 2×190928239² = 72907184895282242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 190928195 and 190928204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190928233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95464119 + 95464120.

It is an arithmetic number, because the mean of its divisors is an integer number (95464120).

Almost surely, 2^190928239 is an apocalyptic number.

190928239 is a deficient number, since it is larger than the sum of its proper divisors (1).

190928239 is an equidigital number, since it uses as much as digits as its factorization.

190928239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 190928239 is about 13817.6784953190. The cubic root of 190928239 is about 575.8243892620.

The spelling of 190928239 in words is "one hundred ninety million, nine hundred twenty-eight thousand, two hundred thirty-nine".