47626991 has 2 divisors, whose sum is σ = 47626992. Its totient is φ = 47626990.

The previous prime is 47626987. The next prime is 47626993. The reversal of 47626991 is 19962674.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47626991 - 2² = 47626987 is a prime.

Together with 47626993, 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 (47626993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23813495 + 23813496.

It is an arithmetic number, because the mean of its divisors is an integer number (23813496).

Almost surely, 2^47626991 is an apocalyptic number.

47626991 is a deficient number, since it is larger than the sum of its proper divisors (1).

47626991 is an equidigital number, since it uses as much as digits as its factorization.

47626991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 47626991 is about 6901.2311220535. The cubic root of 47626991 is about 362.4802773257.

The spelling of 47626991 in words is "forty-seven million, six hundred twenty-six thousand, nine hundred ninety-one".