1390261677 has 16 divisors (see below), whose sum is σ = 2119286400. Its totient is φ = 794138112.

The previous prime is 1390261669. The next prime is 1390261699. The reversal of 1390261677 is 7761620931.

It is not a de Polignac number, because 1390261677 - 2³ = 1390261669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390261627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53173 + ... + 74885.

It is an arithmetic number, because the mean of its divisors is an integer number (132455400).

Almost surely, 2^1390261677 is an apocalyptic number.

It is an amenable number.

1390261677 is a deficient number, since it is larger than the sum of its proper divisors (729024723).

1390261677 is a wasteful number, since it uses less digits than its factorization.

1390261677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24772.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 1390261677 is about 37286.2129613615. The cubic root of 1390261677 is about 1116.0890582633.

The spelling of 1390261677 in words is "one billion, three hundred ninety million, two hundred sixty-one thousand, six hundred seventy-seven".