947396457 has 12 divisors (see below), whose sum is σ = 1563956160. Its totient is φ = 541369368.

The previous prime is 947396441. The next prime is 947396479. The reversal of 947396457 is 754693749.

It is a happy number.

It is not a de Polignac number, because 947396457 - 2⁴ = 947396441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (947396057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7518957 + ... + 7519082.

It is an arithmetic number, because the mean of its divisors is an integer number (130329680).

Almost surely, 2^947396457 is an apocalyptic number.

It is an amenable number.

947396457 is a deficient number, since it is larger than the sum of its proper divisors (616559703).

947396457 is a wasteful number, since it uses less digits than its factorization.

947396457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15038052 (or 15038049 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The square root of 947396457 is about 30779.8059935406. The cubic root of 947396457 is about 982.1487134490.

The spelling of 947396457 in words is "nine hundred forty-seven million, three hundred ninety-six thousand, four hundred fifty-seven".