1009132440 has 32 divisors (see below), whose sum is σ = 3027397680. Its totient is φ = 269101952.

The previous prime is 1009132417. The next prime is 1009132469. The reversal of 1009132440 is 442319001.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1009132440.

It is a congruent number.

It is an unprimeable number.

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, 4204599 + ... + 4204838.

Almost surely, 2^1009132440 is an apocalyptic number.

1009132440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1009132440 is an abundant number, since it is smaller than the sum of its proper divisors (2018265240).

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

1009132440 is a wasteful number, since it uses less digits than its factorization.

1009132440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8409451 (or 8409447 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1009132440 is about 31766.8449802620. The cubic root of 1009132440 is about 1003.0349265694.

The spelling of 1009132440 in words is "one billion, nine million, one hundred thirty-two thousand, four hundred forty".