47437919 has 2 divisors, whose sum is σ = 47437920. Its totient is φ = 47437918.

The previous prime is 47437913. The next prime is 47437921. The reversal of 47437919 is 91973474.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47437919 - 2¹⁶ = 47372383 is a prime.

It is a super-2 number, since 2×47437919² = 4500712318101122, which contains 22 as substring.

Together with 47437921, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47437919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47437913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23718959 + 23718960.

It is an arithmetic number, because the mean of its divisors is an integer number (23718960).

Almost surely, 2^47437919 is an apocalyptic number.

47437919 is a deficient number, since it is larger than the sum of its proper divisors (1).

47437919 is an equidigital number, since it uses as much as digits as its factorization.

47437919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 47437919 is about 6887.5190743838. The cubic root of 47437919 is about 361.9999771069. Note that the first 4 decimals are identical.

The spelling of 47437919 in words is "forty-seven million, four hundred thirty-seven thousand, nine hundred nineteen".