190120439 has 4 divisors (see below), whose sum is σ = 190195920. Its totient is φ = 190044960.

The previous prime is 190120363. The next prime is 190120451. The reversal of 190120439 is 934021091.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934021091 = 89 ⋅10494619.

It is a cyclic number.

It is not a de Polignac number, because 190120439 - 2¹² = 190116343 is a prime.

It is a super-2 number, since 2×190120439² = 72291562651105442, 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 (190120459) 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, 33827 + ... + 39044.

It is an arithmetic number, because the mean of its divisors is an integer number (47548980).

Almost surely, 2^190120439 is an apocalyptic number.

190120439 is a deficient number, since it is larger than the sum of its proper divisors (75481).

190120439 is an equidigital number, since it uses as much as digits as its factorization.

190120439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75480.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 190120439 is about 13788.4168416827. The cubic root of 190120439 is about 575.0111544150.

The spelling of 190120439 in words is "one hundred ninety million, one hundred twenty thousand, four hundred thirty-nine".