127983398 has 4 divisors (see below), whose sum is σ = 191975100.
Its totient is φ = 63991698.
The previous prime is 127983391. The next prime is 127983403. The reversal of 127983398 is 893389721.
It is a happy number.
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (127983391) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31995848 + ... + 31995851.
It is an arithmetic number, because the mean of its divisors is an integer number (47993775).
Almost surely, 2127983398 is an apocalyptic number.
127983398 is a deficient number, since it is larger than the sum of its proper divisors (63991702).
127983398 is an equidigital number, since it uses as much as digits as its factorization.
127983398 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 63991701.
The product of its digits is 653184, while the sum is 50.
The square root of 127983398 is about 11312.9747635182.
The cubic root of 127983398 is about 503.9466302562.
The spelling of 127983398 in words is "one hundred twenty-seven million, nine hundred eighty-three thousand, three hundred ninety-eight".