1009490 has 24 divisors (see below), whose sum is σ = 1912140. Its totient is φ = 383264.

The previous prime is 1009487. The next prime is 1009499. The reversal of 1009490 is 949001.

It can be written as a sum of positive squares in 2 ways, for example, as 1006009 + 3481 = 1003^2 + 59^2 .

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1009499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17081 + ... + 17139.

2^1009490 is an apocalyptic number.

1009490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1009490 is a deficient number, since it is larger than the sum of its proper divisors (902650).

1009490 is an equidigital number, since it uses as much as digits as its factorization.

1009490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1009490 is about 1004.7337955897. The cubic root of 1009490 is about 100.3153379082.

The spelling of 1009490 in words is "one million, nine thousand, four hundred ninety".