1390277913 has 4 divisors (see below), whose sum is σ = 1853703888. Its totient is φ = 926851940.

The previous prime is 1390277891. The next prime is 1390277929. The reversal of 1390277913 is 3197720931.

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.

It is a cyclic number.

It is not a de Polignac number, because 1390277913 - 2¹⁴ = 1390261529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1390277953) 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, 231712983 + ... + 231712988.

It is an arithmetic number, because the mean of its divisors is an integer number (463425972).

Almost surely, 2^1390277913 is an apocalyptic number.

It is an amenable number.

1390277913 is a deficient number, since it is larger than the sum of its proper divisors (463425975).

1390277913 is an equidigital number, since it uses as much as digits as its factorization.

1390277913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463425974.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 1390277913 is about 37286.4306819518. The cubic root of 1390277913 is about 1116.0934029493.

The spelling of 1390277913 in words is "one billion, three hundred ninety million, two hundred seventy-seven thousand, nine hundred thirteen".