1147990494 has 64 divisors (see below), whose sum is σ = 2719111680. Its totient is φ = 316318080.

The previous prime is 1147990477. The next prime is 1147990499. The reversal of 1147990494 is 4940997411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147990499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126964 + ... + 135704.

It is an arithmetic number, because the mean of its divisors is an integer number (42486120).

Almost surely, 2^1147990494 is an apocalyptic number.

1147990494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1147990494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359555840).

1147990494 is an abundant number, since it is smaller than the sum of its proper divisors (1571121186).

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

1147990494 is a wasteful number, since it uses less digits than its factorization.

1147990494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8865.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 1147990494 is about 33882.0084115449. The cubic root of 1147990494 is about 1047.0789543536.

The spelling of 1147990494 in words is "one billion, one hundred forty-seven million, nine hundred ninety thousand, four hundred ninety-four".