947969451 has 48 divisors (see below), whose sum is σ = 1693386240. Its totient is φ = 502407360.

The previous prime is 947969447. The next prime is 947969507. The reversal of 947969451 is 154969749.

It is a happy number.

947969451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 947969451 - 2² = 947969447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (947969401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5070 + ... + 43836.

It is an arithmetic number, because the mean of its divisors is an integer number (35278880).

Almost surely, 2^947969451 is an apocalyptic number.

947969451 is a deficient number, since it is larger than the sum of its proper divisors (745416789).

947969451 is a wasteful number, since it uses less digits than its factorization.

947969451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38816 (or 38813 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 947969451 is about 30789.1125399872. The cubic root of 947969451 is about 982.3466777045.

The spelling of 947969451 in words is "nine hundred forty-seven million, nine hundred sixty-nine thousand, four hundred fifty-one".