1490431 has 4 divisors (see below), whose sum is σ = 1508472. Its totient is φ = 1472392.

The previous prime is 1490429. The next prime is 1490443. The reversal of 1490431 is 1340941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1340941 = 7 ⋅191563.

It is a cyclic number.

It is not a de Polignac number, because 1490431 - 2¹ = 1490429 is a prime.

It is a super-2 number, since 2×1490431² = 4442769131522, which contains 22 as substring.

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 (1496431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8896 + ... + 9061.

It is an arithmetic number, because the mean of its divisors is an integer number (377118).

2^1490431 is an apocalyptic number.

1490431 is a deficient number, since it is larger than the sum of its proper divisors (18041).

1490431 is an equidigital number, since it uses as much as digits as its factorization.

1490431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18040.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1490431 is about 1220.8320932872. The cubic root of 1490431 is about 114.2274876759.

The spelling of 1490431 in words is "one million, four hundred ninety thousand, four hundred thirty-one".