2403400689 has 12 divisors (see below), whose sum is σ = 3556251972. Its totient is φ = 1563187200.

The previous prime is 2403400679. The next prime is 2403400691. The reversal of 2403400689 is 9860043042.

It is a happy number.

2403400689 is a `hidden beast` number, since 240 + 3 + 400 + 6 + 8 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35605089 + 2367795600 = 5967^2 + 48660^2 .

It is not a de Polignac number, because 2403400689 - 2⁷ = 2403400561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2403400609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3256272 + ... + 3257009.

It is an arithmetic number, because the mean of its divisors is an integer number (296354331).

Almost surely, 2^2403400689 is an apocalyptic number.

It is an amenable number.

2403400689 is a deficient number, since it is larger than the sum of its proper divisors (1152851283).

2403400689 is a wasteful number, since it uses less digits than its factorization.

2403400689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6513328 (or 6513325 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 2403400689 is about 49024.4907061766. The cubic root of 2403400689 is about 1339.4979720721.

The spelling of 2403400689 in words is "two billion, four hundred three million, four hundred thousand, six hundred eighty-nine".