1040997400 has 96 divisors (see below), whose sum is σ = 2467810800. Its totient is φ = 408320000.

The previous prime is 1040997379. The next prime is 1040997401. The reversal of 1040997400 is 47990401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040997401) 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 23 ways as a sum of consecutive naturals, for example, 4147275 + ... + 4147525.

Almost surely, 2^1040997400 is an apocalyptic number.

1040997400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1040997400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1233905400).

1040997400 is an abundant number, since it is smaller than the sum of its proper divisors (1426813400).

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

1040997400 is a wasteful number, since it uses less digits than its factorization.

1040997400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1040997400 is about 32264.4913178559. The cubic root of 1040997400 is about 1013.4831866142.

The spelling of 1040997400 in words is "one billion, forty million, nine hundred ninety-seven thousand, four hundred".