1399861677 has 16 divisors (see below), whose sum is σ = 1920771072. Its totient is φ = 906400560.

The previous prime is 1399861669. The next prime is 1399861681. The reversal of 1399861677 is 7761689931.

It is not a de Polignac number, because 1399861677 - 2³ = 1399861669 is a prime.

It is a super-2 number, since 2×1399861677² = 3919225429466504658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399861667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19423 + ... + 56364.

It is an arithmetic number, because the mean of its divisors is an integer number (120048192).

Almost surely, 2^1399861677 is an apocalyptic number.

It is an amenable number.

1399861677 is a deficient number, since it is larger than the sum of its proper divisors (520909395).

1399861677 is a wasteful number, since it uses less digits than its factorization.

1399861677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75968.

The product of its digits is 3429216, while the sum is 57.

The square root of 1399861677 is about 37414.7254032420. The cubic root of 1399861677 is about 1118.6520979131.

The spelling of 1399861677 in words is "one billion, three hundred ninety-nine million, eight hundred sixty-one thousand, six hundred seventy-seven".