1490917 has 4 divisors (see below), whose sum is σ = 1578636. Its totient is φ = 1403200.

The previous prime is 1490899. The next prime is 1490921. The reversal of 1490917 is 7190941.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1331716 + 159201 = 1154^2 + 399^2 .

It is a cyclic number.

It is not a de Polignac number, because 1490917 - 2⁷ = 1490789 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

1490917 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490117) 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, 43834 + ... + 43867.

It is an arithmetic number, because the mean of its divisors is an integer number (394659).

2^1490917 is an apocalyptic number.

1490917 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1490917 is a deficient number, since it is larger than the sum of its proper divisors (87719).

1490917 is an equidigital number, since it uses as much as digits as its factorization.

1490917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87718.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 1490917 is about 1221.0311216345. The cubic root of 1490917 is about 114.2399020996.

The spelling of 1490917 in words is "one million, four hundred ninety thousand, nine hundred seventeen".