127834389 has 16 divisors (see below), whose sum is σ = 189872640. Its totient is φ = 85003200.

The previous prime is 127834381. The next prime is 127834393. The reversal of 127834389 is 983438721.

It is not a de Polignac number, because 127834389 - 2³ = 127834381 is a prime.

It is a super-2 number, since 2×127834389² = 32683262022006642, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127834381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4924 + ... + 16730.

It is an arithmetic number, because the mean of its divisors is an integer number (11867040).

Almost surely, 2^127834389 is an apocalyptic number.

It is an amenable number.

127834389 is a deficient number, since it is larger than the sum of its proper divisors (62038251).

127834389 is a wasteful number, since it uses less digits than its factorization.

127834389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12217 (or 12211 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 127834389 is about 11306.3870887211. The cubic root of 127834389 is about 503.7509753340.

It can be divided in two parts, 12 and 7834389, that added together give a square (7834401 = 2799²).

The spelling of 127834389 in words is "one hundred twenty-seven million, eight hundred thirty-four thousand, three hundred eighty-nine".