1244249436 has 24 divisors (see below), whose sum is σ = 2904056064. Its totient is φ = 414634480.

The previous prime is 1244249399. The next prime is 1244249443. The reversal of 1244249436 is 6349424421.

It is a junction number, because it is equal to n+sod(n) for n = 1244249394 and 1244249403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38221 + ... + 62843.

It is an arithmetic number, because the mean of its divisors is an integer number (121002336).

Almost surely, 2^1244249436 is an apocalyptic number.

It is an amenable number.

1244249436 is an abundant number, since it is smaller than the sum of its proper divisors (1659806628).

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

1244249436 is a wasteful number, since it uses less digits than its factorization.

1244249436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28841 (or 28839 counting only the distinct ones).

The product of its digits is 165888, while the sum is 39.

The square root of 1244249436 is about 35273.9200543404. The cubic root of 1244249436 is about 1075.5629100914.

The spelling of 1244249436 in words is "one billion, two hundred forty-four million, two hundred forty-nine thousand, four hundred thirty-six".