1490440 has 32 divisors (see below), whose sum is σ = 3833280. Its totient is φ = 510912.

The previous prime is 1490429. The next prime is 1490443. The reversal of 1490440 is 440941.

It is a happy number.

It is a super-2 number, since 2×1490440² = 4442822787200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1490443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2382 + ... + 2941.

It is an arithmetic number, because the mean of its divisors is an integer number (119790).

2^1490440 is an apocalyptic number.

1490440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1490440 is an abundant number, since it is smaller than the sum of its proper divisors (2342840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1490440 is a wasteful number, since it uses less digits than its factorization.

1490440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341 (or 5337 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1490440 is about 1220.8357792922. The cubic root of 1490440 is about 114.2277175971.

The spelling of 1490440 in words is "one million, four hundred ninety thousand, four hundred forty".