1299420886 has 4 divisors (see below), whose sum is σ = 1949131332. Its totient is φ = 649710442.

The previous prime is 1299420877. The next prime is 1299420907. The reversal of 1299420886 is 6880249921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6880249921 = 769 ⋅8947009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324855220 + ... + 324855223.

It is an arithmetic number, because the mean of its divisors is an integer number (487282833).

Almost surely, 2^1299420886 is an apocalyptic number.

1299420886 is a deficient number, since it is larger than the sum of its proper divisors (649710446).

1299420886 is an equidigital number, since it uses as much as digits as its factorization.

1299420886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649710445.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 1299420886 is about 36047.4809938226. The cubic root of 1299420886 is about 1091.2307972217.

The spelling of 1299420886 in words is "one billion, two hundred ninety-nine million, four hundred twenty thousand, eight hundred eighty-six".