1044155399 has 8 divisors (see below), whose sum is σ = 1195422240. Its totient is φ = 893414016.

The previous prime is 1044155383. The next prime is 1044155407. The reversal of 1044155399 is 9935514401.

1044155399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1044155399 - 2⁴ = 1044155383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044155699) 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, 127094 + ... + 135059.

It is an arithmetic number, because the mean of its divisors is an integer number (149427780).

Almost surely, 2^1044155399 is an apocalyptic number.

1044155399 is a deficient number, since it is larger than the sum of its proper divisors (151266841).

1044155399 is an equidigital number, since it uses as much as digits as its factorization.

1044155399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262729.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 1044155399 is about 32313.3934924823. The cubic root of 1044155399 is about 1014.5069957284.

The spelling of 1044155399 in words is "one billion, forty-four million, one hundred fifty-five thousand, three hundred ninety-nine".