1039490091 has 24 divisors (see below), whose sum is σ = 1575887040. Its totient is φ = 684630792.

The previous prime is 1039490077. The next prime is 1039490119. The reversal of 1039490091 is 1900949301.

It is not a de Polignac number, because 1039490091 - 2⁹ = 1039489579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1039490021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5601 + ... + 45938.

It is an arithmetic number, because the mean of its divisors is an integer number (65661960).

Almost surely, 2^1039490091 is an apocalyptic number.

1039490091 is a deficient number, since it is larger than the sum of its proper divisors (536396949).

1039490091 is an frugal number, since it uses more digits than its factorization.

1039490091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51637 (or 51625 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 1039490091 is about 32241.1242204735. The cubic root of 1039490091 is about 1012.9937937068.

The spelling of 1039490091 in words is "one billion, thirty-nine million, four hundred ninety thousand, ninety-one".