1490091 has 8 divisors (see below), whose sum is σ = 2002944. Its totient is φ = 985320.

The previous prime is 1490089. The next prime is 1490117. The reversal of 1490091 is 1900941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1490091 - 2¹ = 1490089 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1575 + ... + 2336.

It is an arithmetic number, because the mean of its divisors is an integer number (250368).

2^1490091 is an apocalyptic number.

1490091 is a deficient number, since it is larger than the sum of its proper divisors (512853).

1490091 is a wasteful number, since it uses less digits than its factorization.

1490091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1490091 is about 1220.6928360566. The cubic root of 1490091 is about 114.2188010836.

The spelling of 1490091 in words is "one million, four hundred ninety thousand, ninety-one".