947890401 has 16 divisors (see below), whose sum is σ = 1286577600. Its totient is φ = 620587008.

The previous prime is 947890397. The next prime is 947890429. The reversal of 947890401 is 104098749.

It is not a de Polignac number, because 947890401 - 2² = 947890397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (947891401) 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, 227505 + ... + 231633.

It is an arithmetic number, because the mean of its divisors is an integer number (80411100).

Almost surely, 2^947890401 is an apocalyptic number.

It is an amenable number.

947890401 is a deficient number, since it is larger than the sum of its proper divisors (338687199).

947890401 is a wasteful number, since it uses less digits than its factorization.

947890401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5488.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 947890401 is about 30787.8287802177. The cubic root of 947890401 is about 982.3193713873.

The spelling of 947890401 in words is "nine hundred forty-seven million, eight hundred ninety thousand, four hundred one".