1490239841 has 4 divisors (see below), whose sum is σ = 1490989572. Its totient is φ = 1489490112.

The previous prime is 1490239837. The next prime is 1490239847. The reversal of 1490239841 is 1489320941.

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 1108623616 + 381616225 = 33296^2 + 19535^2 .

It is a cyclic number.

It is not a de Polignac number, because 1490239841 - 2² = 1490239837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1490239847) 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 3 ways as a sum of consecutive naturals, for example, 371876 + ... + 375861.

It is an arithmetic number, because the mean of its divisors is an integer number (372747393).

Almost surely, 2^1490239841 is an apocalyptic number.

It is an amenable number.

1490239841 is a deficient number, since it is larger than the sum of its proper divisors (749731).

1490239841 is an equidigital number, since it uses as much as digits as its factorization.

1490239841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749730.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 1490239841 is about 38603.6247132313. The cubic root of 1490239841 is about 1142.2260395525.

The spelling of 1490239841 in words is "one billion, four hundred ninety million, two hundred thirty-nine thousand, eight hundred forty-one".