1253869947 has 24 divisors (see below), whose sum is σ = 2009292480. Its totient is φ = 747037680.

The previous prime is 1253869937. The next prime is 1253869951. The reversal of 1253869947 is 7499683521.

1253869947 is a `hidden beast` number, since 1 + 2 + 538 + 69 + 9 + 47 = 666.

It is not a de Polignac number, because 1253869947 - 2⁴ = 1253869931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1253869893 and 1253869902.

It is not an unprimeable number, because it can be changed into a prime (1253869937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101493 + ... + 113174.

It is an arithmetic number, because the mean of its divisors is an integer number (83720520).

Almost surely, 2^1253869947 is an apocalyptic number.

1253869947 is a deficient number, since it is larger than the sum of its proper divisors (755422533).

1253869947 is a wasteful number, since it uses less digits than its factorization.

1253869947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214743 (or 214740 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 1253869947 is about 35410.0260801937. The cubic root of 1253869947 is about 1078.3278728296.

The spelling of 1253869947 in words is "one billion, two hundred fifty-three million, eight hundred sixty-nine thousand, nine hundred forty-seven".