47391941 has 4 divisors (see below), whose sum is σ = 48547884. Its totient is φ = 46236000.

The previous prime is 47391923. The next prime is 47391943. The reversal of 47391941 is 14919374.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8579041 + 38812900 = 2929^2 + 6230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47391941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47391895 and 47391904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47391943) 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, 577910 + ... + 577991.

It is an arithmetic number, because the mean of its divisors is an integer number (12136971).

Almost surely, 2^47391941 is an apocalyptic number.

47391941 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

47391941 is a deficient number, since it is larger than the sum of its proper divisors (1155943).

47391941 is a wasteful number, since it uses less digits than its factorization.

47391941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155942.

The product of its digits is 27216, while the sum is 38.

The square root of 47391941 is about 6884.1804886275. The cubic root of 47391941 is about 361.8829862027.

The spelling of 47391941 in words is "forty-seven million, three hundred ninety-one thousand, nine hundred forty-one".