912139451 has 16 divisors (see below), whose sum is σ = 968309760. Its totient is φ = 857450880.

The previous prime is 912139447. The next prime is 912139483. The reversal of 912139451 is 154931219.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 912139451 - 2² = 912139447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (912939451) 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 15 ways as a sum of consecutive naturals, for example, 436856 + ... + 438938.

It is an arithmetic number, because the mean of its divisors is an integer number (60519360).

Almost surely, 2^912139451 is an apocalyptic number.

912139451 is a deficient number, since it is larger than the sum of its proper divisors (56170309).

912139451 is a wasteful number, since it uses less digits than its factorization.

912139451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426.

The product of its digits is 9720, while the sum is 35.

The square root of 912139451 is about 30201.6464948519. The cubic root of 912139451 is about 969.8109423585.

The spelling of 912139451 in words is "nine hundred twelve million, one hundred thirty-nine thousand, four hundred fifty-one".