47391046 has 8 divisors (see below), whose sum is σ = 73537920. Its totient is φ = 22878408.

The previous prime is 47391041. The next prime is 47391061. The reversal of 47391046 is 64019374.

It is a happy number.

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

It is a super-2 number, since 2×47391046² = 4491822481948232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47391041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408486 + ... + 408601.

It is an arithmetic number, because the mean of its divisors is an integer number (9192240).

Almost surely, 2^47391046 is an apocalyptic number.

47391046 is a deficient number, since it is larger than the sum of its proper divisors (26146874).

47391046 is a wasteful number, since it uses less digits than its factorization.

47391046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817118.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 47391046 is about 6884.1154842144. The cubic root of 47391046 is about 361.8807081268.

It can be divided in two parts, 473 and 91046, that added together give a palindrome (91519).

The spelling of 47391046 in words is "forty-seven million, three hundred ninety-one thousand, forty-six".