1299709870 has 16 divisors (see below), whose sum is σ = 2341120608. Its totient is φ = 519518880.

The previous prime is 1299709861. The next prime is 1299709913. The reversal of 1299709870 is 789079921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30441 + ... + 59380.

It is an arithmetic number, because the mean of its divisors is an integer number (146320038).

Almost surely, 2^1299709870 is an apocalyptic number.

1299709870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1299709870 is a deficient number, since it is larger than the sum of its proper divisors (1041410738).

1299709870 is a wasteful number, since it uses less digits than its factorization.

1299709870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91275.

The product of its (nonzero) digits is 571536, while the sum is 52.

The square root of 1299709870 is about 36051.4891509352. The cubic root of 1299709870 is about 1091.3116857852.

The spelling of 1299709870 in words is "one billion, two hundred ninety-nine million, seven hundred nine thousand, eight hundred seventy".