47266391 has 4 divisors (see below), whose sum is σ = 47725392. Its totient is φ = 46807392.

The previous prime is 47266381. The next prime is 47266393. The reversal of 47266391 is 19366274.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19366274 = 2 ⋅9683137.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47266391 is a prime.

It is a super-2 number, since 2×47266391² = 4468223436329762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47266393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229346 + ... + 229551.

It is an arithmetic number, because the mean of its divisors is an integer number (11931348).

Almost surely, 2^47266391 is an apocalyptic number.

47266391 is a deficient number, since it is larger than the sum of its proper divisors (459001).

47266391 is a wasteful number, since it uses less digits than its factorization.

47266391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459000.

The product of its digits is 54432, while the sum is 38.

The square root of 47266391 is about 6875.0557088652. The cubic root of 47266391 is about 361.5631386471.

The spelling of 47266391 in words is "forty-seven million, two hundred sixty-six thousand, three hundred ninety-one".