49866643 has 2 divisors, whose sum is σ = 49866644. Its totient is φ = 49866642.

The previous prime is 49866613. The next prime is 49866653. The reversal of 49866643 is 34666894.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49866643 - 2²⁵ = 16312211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49866593 and 49866602.

It is not a weakly prime, because it can be changed into another prime (49866613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24933321 + 24933322.

It is an arithmetic number, because the mean of its divisors is an integer number (24933322).

Almost surely, 2^49866643 is an apocalyptic number.

49866643 is a deficient number, since it is larger than the sum of its proper divisors (1).

49866643 is an equidigital number, since it uses as much as digits as its factorization.

49866643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 46.

The square root of 49866643 is about 7061.6317519395. The cubic root of 49866643 is about 368.0753306521.

The spelling of 49866643 in words is "forty-nine million, eight hundred sixty-six thousand, six hundred forty-three".