47797643 has 2 divisors, whose sum is σ = 47797644. Its totient is φ = 47797642.

The previous prime is 47797621. The next prime is 47797661. The reversal of 47797643 is 34679774.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47797643 is a prime.

It is a super-2 number, since 2×47797643² = 4569229352710898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47797663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23898821 + 23898822.

It is an arithmetic number, because the mean of its divisors is an integer number (23898822).

Almost surely, 2^47797643 is an apocalyptic number.

47797643 is a deficient number, since it is larger than the sum of its proper divisors (1).

47797643 is an equidigital number, since it uses as much as digits as its factorization.

47797643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 889056, while the sum is 47.

The square root of 47797643 is about 6913.5839475629. The cubic root of 47797643 is about 362.9126949437.

The spelling of 47797643 in words is "forty-seven million, seven hundred ninety-seven thousand, six hundred forty-three".