47123997 has 8 divisors (see below), whose sum is σ = 63589344. Its totient is φ = 31037328.

The previous prime is 47123969. The next prime is 47124013. The reversal of 47123997 is 79932174.

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

It is not a de Polignac number, because 47123997 - 2¹² = 47119901 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47123957) 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, 94378 + ... + 94875.

It is an arithmetic number, because the mean of its divisors is an integer number (7948668).

Almost surely, 2^47123997 is an apocalyptic number.

It is an amenable number.

47123997 is a deficient number, since it is larger than the sum of its proper divisors (16465347).

47123997 is a wasteful number, since it uses less digits than its factorization.

47123997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189339.

The product of its digits is 95256, while the sum is 42.

The square root of 47123997 is about 6864.6920542731. The cubic root of 47123997 is about 361.1996935891.

The spelling of 47123997 in words is "forty-seven million, one hundred twenty-three thousand, nine hundred ninety-seven".