947421406 has 12 divisors (see below), whose sum is σ = 1442673288. Its totient is φ = 466635972.

The previous prime is 947421389. The next prime is 947421413. The reversal of 947421406 is 604124749.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43786 + ... + 61741.

It is an arithmetic number, because the mean of its divisors is an integer number (120222774).

Almost surely, 2^947421406 is an apocalyptic number.

947421406 is a deficient number, since it is larger than the sum of its proper divisors (495251882).

947421406 is a wasteful number, since it uses less digits than its factorization.

947421406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105663 (or 105596 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 947421406 is about 30780.2112728292. The cubic root of 947421406 is about 982.1573347651.

The spelling of 947421406 in words is "nine hundred forty-seven million, four hundred twenty-one thousand, four hundred six".