1489431 has 4 divisors (see below), whose sum is σ = 1985912. Its totient is φ = 992952.

The previous prime is 1489409. The next prime is 1489441. The reversal of 1489431 is 1349841.

It is a happy number.

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

It is not a de Polignac number, because 1489431 - 2⁵ = 1489399 is a prime.

It is a super-2 number, since 2×1489431² = 4436809407522, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

1489431 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489441) 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, 248236 + ... + 248241.

It is an arithmetic number, because the mean of its divisors is an integer number (496478).

2^1489431 is an apocalyptic number.

1489431 is a deficient number, since it is larger than the sum of its proper divisors (496481).

1489431 is an equidigital number, since it uses as much as digits as its factorization.

1489431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496480.

The product of its digits is 3456, while the sum is 30.

The square root of 1489431 is about 1220.4224678364. The cubic root of 1489431 is about 114.2019351022.

The spelling of 1489431 in words is "one million, four hundred eighty-nine thousand, four hundred thirty-one".