1277047049 has 8 divisors (see below), whose sum is σ = 1311192960. Its totient is φ = 1243044000.

The previous prime is 1277046997. The next prime is 1277047061. The reversal of 1277047049 is 9407407721.

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

It is a cyclic number.

It is not a de Polignac number, because 1277047049 - 2²⁴ = 1260269833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1277046997 and 1277047015.

It is not an unprimeable number, because it can be changed into a prime (1277047949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17477 + ... + 53474.

It is an arithmetic number, because the mean of its divisors is an integer number (163899120).

Almost surely, 2^1277047049 is an apocalyptic number.

It is an amenable number.

1277047049 is a deficient number, since it is larger than the sum of its proper divisors (34145911).

1277047049 is an equidigital number, since it uses as much as digits as its factorization.

1277047049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71431.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 1277047049 is about 35735.7950660119. The cubic root of 1277047049 is about 1084.9314514233.

The spelling of 1277047049 in words is "one billion, two hundred seventy-seven million, forty-seven thousand, forty-nine".