1290099 has 8 divisors (see below), whose sum is σ = 1736640. Its totient is φ = 851816.

The previous prime is 1290083. The next prime is 1290109. The reversal of 1290099 is 9900921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1290099 - 2⁴ = 1290083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1290019) 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, 1689 + ... + 2330.

It is an arithmetic number, because the mean of its divisors is an integer number (217080).

2^1290099 is an apocalyptic number.

1290099 is a deficient number, since it is larger than the sum of its proper divisors (446541).

1290099 is a wasteful number, since it uses less digits than its factorization.

1290099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 1290099 is about 1135.8252506438. The cubic root of 1290099 is about 108.8615080321.

The spelling of 1290099 in words is "one million, two hundred ninety thousand, ninety-nine".