1249522389 has 32 divisors (see below), whose sum is σ = 1964874240. Its totient is φ = 782078976.

The previous prime is 1249522367. The next prime is 1249522399. The reversal of 1249522389 is 9832259421.

1249522389 is a `hidden beast` number, since 1 + 2 + 49 + 522 + 3 + 89 = 666.

It is not a de Polignac number, because 1249522389 - 2⁹ = 1249521877 is a prime.

It is a super-2 number, since 2×1249522389² = 3122612401224534642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249522399) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195604 + ... + 201890.

It is an arithmetic number, because the mean of its divisors is an integer number (61402320).

Almost surely, 2^1249522389 is an apocalyptic number.

It is an amenable number.

1249522389 is a deficient number, since it is larger than the sum of its proper divisors (715351851).

1249522389 is a wasteful number, since it uses less digits than its factorization.

1249522389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6746 (or 6740 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 1249522389 is about 35348.5839744678. The cubic root of 1249522389 is about 1077.0801299774.

The spelling of 1249522389 in words is "one billion, two hundred forty-nine million, five hundred twenty-two thousand, three hundred eighty-nine".