127977406 has 8 divisors (see below), whose sum is σ = 198585720. Its totient is φ = 61782168.

The previous prime is 127977401. The next prime is 127977463. The reversal of 127977406 is 604779721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127977401) 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, 1103196 + ... + 1103311.

It is an arithmetic number, because the mean of its divisors is an integer number (24823215).

Almost surely, 2^127977406 is an apocalyptic number.

127977406 is a deficient number, since it is larger than the sum of its proper divisors (70608314).

127977406 is a wasteful number, since it uses less digits than its factorization.

127977406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206538.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 127977406 is about 11312.7099317538. The cubic root of 127977406 is about 503.9387654462.

The spelling of 127977406 in words is "one hundred twenty-seven million, nine hundred seventy-seven thousand, four hundred six".