1299405770 has 64 divisors (see below), whose sum is σ = 2592705024. Its totient is φ = 465903360.

The previous prime is 1299405739. The next prime is 1299405773. The reversal of 1299405770 is 775049921.

It is not an unprimeable number, because it can be changed into a prime (1299405773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 708755 + ... + 710585.

It is an arithmetic number, because the mean of its divisors is an integer number (40511016).

Almost surely, 2^1299405770 is an apocalyptic number.

1299405770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1299405770 is a deficient number, since it is larger than the sum of its proper divisors (1293299254).

1299405770 is a wasteful number, since it uses less digits than its factorization.

1299405770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 1299405770 is about 36047.2713253028. The cubic root of 1299405770 is about 1091.2265658217.

The spelling of 1299405770 in words is "one billion, two hundred ninety-nine million, four hundred five thousand, seven hundred seventy".