1299930390 has 64 divisors (see below), whose sum is σ = 3781624320. Its totient is φ = 315133920.

The previous prime is 1299930389. The next prime is 1299930439. The reversal of 1299930390 is 930399921.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215874 + ... + 221813.

It is an arithmetic number, because the mean of its divisors is an integer number (59087880).

Almost surely, 2^1299930390 is an apocalyptic number.

1299930390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1299930390 is an abundant number, since it is smaller than the sum of its proper divisors (2481693930).

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

1299930390 is a wasteful number, since it uses less digits than its factorization.

1299930390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437714 (or 437708 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 45.

The square root of 1299930390 is about 36054.5474247008. The cubic root of 1299930390 is about 1091.3734027497.

The spelling of 1299930390 in words is "one billion, two hundred ninety-nine million, nine hundred thirty thousand, three hundred ninety".