1040400202099 has 4 divisors (see below), whose sum is σ = 1054652259736. Its totient is φ = 1026148144464.

The previous prime is 1040400202067. The next prime is 1040400202103. The reversal of 1040400202099 is 9902020040401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1040400202099 - 2⁵ = 1040400202067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040400202099.

It is not an unprimeable number, because it can be changed into a prime (1040400202799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7126028709 + ... + 7126028854.

It is an arithmetic number, because the mean of its divisors is an integer number (263663064934).

Almost surely, 2^{1040400202099} is an apocalyptic number.

1040400202099 is a deficient number, since it is larger than the sum of its proper divisors (14252057637).

1040400202099 is an equidigital number, since it uses as much as digits as its factorization.

1040400202099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14252057636.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 1040400202099 in words is "one trillion, forty billion, four hundred million, two hundred two thousand, ninety-nine".