127779485 has 8 divisors (see below), whose sum is σ = 153673656. Its totient is φ = 101998080.

The previous prime is 127779479. The next prime is 127779521. The reversal of 127779485 is 584977721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 72812089 + 54967396 = 8533^2 + 7414^2 .

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

It is not a de Polignac number, because 127779485 - 2¹⁰ = 127778461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25676 + ... + 30245.

It is an arithmetic number, because the mean of its divisors is an integer number (19209207).

Almost surely, 2^127779485 is an apocalyptic number.

It is an amenable number.

127779485 is a deficient number, since it is larger than the sum of its proper divisors (25894171).

127779485 is an equidigital number, since it uses as much as digits as its factorization.

127779485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56383.

The product of its digits is 987840, while the sum is 50.

The square root of 127779485 is about 11303.9588198118. The cubic root of 127779485 is about 503.6788458016.

The spelling of 127779485 in words is "one hundred twenty-seven million, seven hundred seventy-nine thousand, four hundred eighty-five".