1040686408 has 24 divisors (see below), whose sum is σ = 1993720950. Its totient is φ = 509263424.

The previous prime is 1040686403. The next prime is 1040686421. The reversal of 1040686408 is 8046860401.

1040686408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 979815204 + 60871204 = 31302^2 + 7802^2 .

It is not an unprimeable number, because it can be changed into a prime (1040686403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11773 + ... + 47116.

Almost surely, 2^1040686408 is an apocalyptic number.

It is an amenable number.

1040686408 is a deficient number, since it is larger than the sum of its proper divisors (953034542).

1040686408 is an equidigital number, since it uses as much as digits as its factorization.

1040686408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58989 (or 58938 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 1040686408 is about 32259.6715420353. The cubic root of 1040686408 is about 1013.3822524668.

The spelling of 1040686408 in words is "one billion, forty million, six hundred eighty-six thousand, four hundred eight".