1299086964 has 48 divisors (see below), whose sum is σ = 3849148800. Its totient is φ = 371167488.

The previous prime is 1299086959. The next prime is 1299086969. The reversal of 1299086964 is 4696809921.

It is an interprime number because it is at equal distance from previous prime (1299086959) and next prime (1299086969).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1299086964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299086969) 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, 858429 + ... + 859940.

It is an arithmetic number, because the mean of its divisors is an integer number (80190600).

Almost surely, 2^1299086964 is an apocalyptic number.

1299086964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1299086964 is an abundant number, since it is smaller than the sum of its proper divisors (2550061836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1299086964 is a wasteful number, since it uses less digits than its factorization.

1299086964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718389 (or 1718381 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The square root of 1299086964 is about 36042.8489994895. The cubic root of 1299086964 is about 1091.1373152736.

The spelling of 1299086964 in words is "one billion, two hundred ninety-nine million, eighty-six thousand, nine hundred sixty-four".