1249426969 has 8 divisors (see below), whose sum is σ = 1428130368. Its totient is φ = 1070777040.

The previous prime is 1249426967. The next prime is 1249426987. The reversal of 1249426969 is 9696249421.

It is a happy number.

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 1249426969 - 2¹ = 1249426967 is a prime.

It is a super-2 number, since 2×1249426969² = 3122135501729053922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1249426961) 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, 84414 + ... + 98104.

It is an arithmetic number, because the mean of its divisors is an integer number (178516296).

Almost surely, 2^1249426969 is an apocalyptic number.

It is an amenable number.

1249426969 is a deficient number, since it is larger than the sum of its proper divisors (178703399).

1249426969 is a wasteful number, since it uses less digits than its factorization.

1249426969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26735.

The product of its digits is 1679616, while the sum is 52.

The square root of 1249426969 is about 35347.2342482407. The cubic root of 1249426969 is about 1077.0527121408.

The spelling of 1249426969 in words is "one billion, two hundred forty-nine million, four hundred twenty-six thousand, nine hundred sixty-nine".