123899804 has 24 divisors (see below), whose sum is σ = 258574848. Its totient is φ = 50790960.

The previous prime is 123899759. The next prime is 123899807. The reversal of 123899804 is 408998321.

It is a happy number.

It is a super-2 number, since 2×123899804² = 30702322862476832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123899807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95552 + ... + 96839.

It is an arithmetic number, because the mean of its divisors is an integer number (10773952).

Almost surely, 2^123899804 is an apocalyptic number.

123899804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123899804 is an abundant number, since it is smaller than the sum of its proper divisors (134675044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123899804 is a wasteful number, since it uses less digits than its factorization.

123899804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192425 (or 192423 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 123899804 is about 11131.0288832614. The cubic root of 123899804 is about 498.5287470759.

The spelling of 123899804 in words is "one hundred twenty-three million, eight hundred ninety-nine thousand, eight hundred four".