1023404099 has 4 divisors (see below), whose sum is σ = 1024267464. Its totient is φ = 1022540736.

The previous prime is 1023404093. The next prime is 1023404101. The reversal of 1023404099 is 9904043201.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023404099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023404093) 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 3 ways as a sum of consecutive naturals, for example, 429902 + ... + 432275.

It is an arithmetic number, because the mean of its divisors is an integer number (256066866).

Almost surely, 2^1023404099 is an apocalyptic number.

1023404099 is a deficient number, since it is larger than the sum of its proper divisors (863365).

1023404099 is an equidigital number, since it uses as much as digits as its factorization.

1023404099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863364.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1023404099 is about 31990.6876918893. The cubic root of 1023404099 is about 1007.7412842135.

The spelling of 1023404099 in words is "one billion, twenty-three million, four hundred four thousand, ninety-nine".