1244431091 has 8 divisors (see below), whose sum is σ = 1262883600. Its totient is φ = 1226106720.

The previous prime is 1244431037. The next prime is 1244431099. The reversal of 1244431091 is 1901344421.

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 1244431091 - 2¹⁰ = 1244430067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244431099) 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, 12380 + ... + 51401.

It is an arithmetic number, because the mean of its divisors is an integer number (157860450).

Almost surely, 2^1244431091 is an apocalyptic number.

1244431091 is a deficient number, since it is larger than the sum of its proper divisors (18452509).

1244431091 is a wasteful number, since it uses less digits than its factorization.

1244431091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64069.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1244431091 is about 35276.4948797354. The cubic root of 1244431091 is about 1075.6152500449.

The spelling of 1244431091 in words is "one billion, two hundred forty-four million, four hundred thirty-one thousand, ninety-one".