47740991 has 2 divisors, whose sum is σ = 47740992. Its totient is φ = 47740990.

The previous prime is 47740963. The next prime is 47740993. The reversal of 47740991 is 19904774.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47740991 - 2²² = 43546687 is a prime.

It is a Sophie Germain prime.

Together with 47740993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47740993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23870495 + 23870496.

It is an arithmetic number, because the mean of its divisors is an integer number (23870496).

Almost surely, 2^47740991 is an apocalyptic number.

47740991 is a deficient number, since it is larger than the sum of its proper divisors (1).

47740991 is an equidigital number, since it uses as much as digits as its factorization.

47740991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 47740991 is about 6909.4855814308. The cubic root of 47740991 is about 362.7692578979.

The spelling of 47740991 in words is "forty-seven million, seven hundred forty thousand, nine hundred ninety-one".