1490399 has 4 divisors (see below), whose sum is σ = 1515720. Its totient is φ = 1465080.

The previous prime is 1490381. The next prime is 1490429. The reversal of 1490399 is 9930941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1490399 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12572 + ... + 12689.

It is an arithmetic number, because the mean of its divisors is an integer number (378930).

2^1490399 is an apocalyptic number.

1490399 is a deficient number, since it is larger than the sum of its proper divisors (25321).

1490399 is an equidigital number, since it uses as much as digits as its factorization.

1490399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25320.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 1490399 is about 1220.8189874015. The cubic root of 1490399 is about 114.2266701706.

The spelling of 1490399 in words is "one million, four hundred ninety thousand, three hundred ninety-nine".