9900040402 has 64 divisors (see below), whose sum is σ = 18625167360. Its totient is φ = 3851064000.

The previous prime is 9900040369. The next prime is 9900040411. The reversal of 9900040402 is 2040400099.

It is a super-2 number, since 2×9900040402² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 826903 + ... + 838789.

It is an arithmetic number, because the mean of its divisors is an integer number (291018240).

Almost surely, 2^9900040402 is an apocalyptic number.

9900040402 is a deficient number, since it is larger than the sum of its proper divisors (8725126958).

9900040402 is a wasteful number, since it uses less digits than its factorization.

9900040402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12047.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 9900040402 is about 99498.9467381439. The cubic root of 9900040402 is about 2147.2320899696.

The spelling of 9900040402 in words is "nine billion, nine hundred million, forty thousand, four hundred two".