190030439 has 4 divisors (see below), whose sum is σ = 198292656. Its totient is φ = 181768224.

The previous prime is 190030411. The next prime is 190030441. The reversal of 190030439 is 934030091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 190030439 - 2¹⁶ = 189964903 is a prime.

It is a super-2 number, since 2×190030439² = 72223135493065442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190030339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4131074 + ... + 4131119.

It is an arithmetic number, because the mean of its divisors is an integer number (49573164).

Almost surely, 2^190030439 is an apocalyptic number.

190030439 is a deficient number, since it is larger than the sum of its proper divisors (8262217).

190030439 is an equidigital number, since it uses as much as digits as its factorization.

190030439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8262216.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 190030439 is about 13785.1528464504. The cubic root of 190030439 is about 574.9204063742.

The spelling of 190030439 in words is "one hundred ninety million, thirty thousand, four hundred thirty-nine".