1399876881 has 16 divisors (see below), whose sum is σ = 2010847104. Its totient is φ = 861133824.

The previous prime is 1399876879. The next prime is 1399876897. The reversal of 1399876881 is 1886789931.

It is not a de Polignac number, because 1399876881 - 2¹ = 1399876879 is a prime.

It is a super-2 number, since 2×1399876881² = 3919310563916576322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1399876871) 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, 132465 + ... + 142641.

It is an arithmetic number, because the mean of its divisors is an integer number (125677944).

Almost surely, 2^1399876881 is an apocalyptic number.

It is an amenable number.

1399876881 is a deficient number, since it is larger than the sum of its proper divisors (610970223).

1399876881 is a wasteful number, since it uses less digits than its factorization.

1399876881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13720.

The product of its digits is 5225472, while the sum is 60.

The square root of 1399876881 is about 37414.9285847240. The cubic root of 1399876881 is about 1118.6561478191.

The spelling of 1399876881 in words is "one billion, three hundred ninety-nine million, eight hundred seventy-six thousand, eight hundred eighty-one".