947328405 has 16 divisors (see below), whose sum is σ = 1516107264. Its totient is φ = 505114560.

The previous prime is 947328401. The next prime is 947328407. The reversal of 947328405 is 504823749.

It is not a de Polignac number, because 947328405 - 2² = 947328401 is a prime.

It is a super-2 number, since 2×947328405² = 1794862213839688050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947328401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110172 + ... + 118458.

It is an arithmetic number, because the mean of its divisors is an integer number (94756704).

Almost surely, 2^947328405 is an apocalyptic number.

It is an amenable number.

947328405 is a deficient number, since it is larger than the sum of its proper divisors (568778859).

947328405 is a wasteful number, since it uses less digits than its factorization.

947328405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15916.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 947328405 is about 30778.7005086310. The cubic root of 947328405 is about 982.1251967948.

The spelling of 947328405 in words is "nine hundred forty-seven million, three hundred twenty-eight thousand, four hundred five".