127890339 has 4 divisors (see below), whose sum is σ = 170520456. Its totient is φ = 85260224.

The previous prime is 127890331. The next prime is 127890403. The reversal of 127890339 is 933098721.

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 127890339 - 2³ = 127890331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127890339.

It is not an unprimeable number, because it can be changed into a prime (127890331) 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, 21315054 + ... + 21315059.

It is an arithmetic number, because the mean of its divisors is an integer number (42630114).

Almost surely, 2^127890339 is an apocalyptic number.

127890339 is a deficient number, since it is larger than the sum of its proper divisors (42630117).

127890339 is an equidigital number, since it uses as much as digits as its factorization.

127890339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42630116.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 127890339 is about 11308.8610832391. The cubic root of 127890339 is about 503.8244577940.

The spelling of 127890339 in words is "one hundred twenty-seven million, eight hundred ninety thousand, three hundred thirty-nine".