100404120399 has 12 divisors (see below), whose sum is σ = 147148738968. Its totient is φ = 60850981840.

The previous prime is 100404120389. The next prime is 100404120409. The reversal of 100404120399 is 993021404001.

It is an interprime number because it is at equal distance from previous prime (100404120389) and next prime (100404120409).

It is not a de Polignac number, because 100404120399 - 2¹¹ = 100404118351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100404120389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138297324 + ... + 138298049.

It is an arithmetic number, because the mean of its divisors is an integer number (12262394914).

Almost surely, 2^100404120399 is an apocalyptic number.

100404120399 is a deficient number, since it is larger than the sum of its proper divisors (46744618569).

100404120399 is a wasteful number, since it uses less digits than its factorization.

100404120399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276595398 (or 276595387 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 100404120399 in words is "one hundred billion, four hundred four million, one hundred twenty thousand, three hundred ninety-nine".