1299977 has 4 divisors (see below), whose sum is σ = 1485696. Its totient is φ = 1114260.

The previous prime is 1299953. The next prime is 1299979. The reversal of 1299977 is 7799921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7799921 = 23 ⋅339127.

It is not a de Polignac number, because 1299977 - 2⁸ = 1299721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1299979) 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, 92849 + ... + 92862.

It is an arithmetic number, because the mean of its divisors is an integer number (371424).

2^1299977 is an apocalyptic number.

It is an amenable number.

1299977 is a deficient number, since it is larger than the sum of its proper divisors (185719).

1299977 is an equidigital number, since it uses as much as digits as its factorization.

1299977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185718.

The product of its digits is 71442, while the sum is 44.

The square root of 1299977 is about 1140.1653388873. The cubic root of 1299977 is about 109.1386446604.

The spelling of 1299977 in words is "one million, two hundred ninety-nine thousand, nine hundred seventy-seven".