1299380 has 12 divisors (see below), whose sum is σ = 2728740. Its totient is φ = 519744.

The previous prime is 1299379. The next prime is 1299437. The reversal of 1299380 is 839921.

It can be written as a sum of positive squares in 2 ways, for example, as 327184 + 972196 = 572^2 + 986^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32465 + ... + 32504.

It is an arithmetic number, because the mean of its divisors is an integer number (227395).

2^1299380 is an apocalyptic number.

1299380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1299380 is an abundant number, since it is smaller than the sum of its proper divisors (1429360).

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

1299380 is a wasteful number, since it uses less digits than its factorization.

1299380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64978 (or 64976 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1299380 is about 1139.9035046880. The cubic root of 1299380 is about 109.1219351987.

The spelling of 1299380 in words is "one million, two hundred ninety-nine thousand, three hundred eighty".