1299630 has 16 divisors (see below), whose sum is σ = 3119184. Its totient is φ = 346560.

The previous prime is 1299601. The next prime is 1299631. The reversal of 1299630 is 369921.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 43321 = 1299630 / (1 + 2 + 9 + 9 + 6 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21631 + ... + 21690.

It is an arithmetic number, because the mean of its divisors is an integer number (194949).

2^1299630 is an apocalyptic number.

1299630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1299630 is an abundant number, since it is smaller than the sum of its proper divisors (1819554).

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

1299630 is a wasteful number, since it uses less digits than its factorization.

1299630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43331.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 1299630 is about 1140.0131578188. The cubic root of 1299630 is about 109.1289330835.

Subtracting from 1299630 its sum of digits (30), we obtain a square (1299600 = 1140²).

The spelling of 1299630 in words is "one million, two hundred ninety-nine thousand, six hundred thirty".