1143449401 has 16 divisors (see below), whose sum is σ = 1184082624. Its totient is φ = 1103678784.

The previous prime is 1143449399. The next prime is 1143449407. The reversal of 1143449401 is 1049443411.

It is not a de Polignac number, because 1143449401 - 2¹ = 1143449399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143449407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 923755 + ... + 924991.

It is an arithmetic number, because the mean of its divisors is an integer number (74005164).

Almost surely, 2^1143449401 is an apocalyptic number.

It is an amenable number.

1143449401 is a deficient number, since it is larger than the sum of its proper divisors (40633223).

1143449401 is a wasteful number, since it uses less digits than its factorization.

1143449401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1143449401 is about 33814.9286706330. The cubic root of 1143449401 is about 1045.6964904274.

The spelling of 1143449401 in words is "one billion, one hundred forty-three million, four hundred forty-nine thousand, four hundred one".