947899421 has 8 divisors (see below), whose sum is σ = 1093832064. Its totient is φ = 804596400.

The previous prime is 947899397. The next prime is 947899427. The reversal of 947899421 is 124998749.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 947899421 - 2⁶ = 947899357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947899427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656630 + ... + 658071.

It is an arithmetic number, because the mean of its divisors is an integer number (136729008).

Almost surely, 2^947899421 is an apocalyptic number.

It is an amenable number.

947899421 is a deficient number, since it is larger than the sum of its proper divisors (145932643).

947899421 is a wasteful number, since it uses less digits than its factorization.

947899421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314811.

The product of its digits is 1306368, while the sum is 53.

The square root of 947899421 is about 30787.9752663276. The cubic root of 947899421 is about 982.3224872513.

The spelling of 947899421 in words is "nine hundred forty-seven million, eight hundred ninety-nine thousand, four hundred twenty-one".