39428863 has 2 divisors, whose sum is σ = 39428864. Its totient is φ = 39428862.

The previous prime is 39428861. The next prime is 39428881. The reversal of 39428863 is 36882493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39428863 - 2¹ = 39428861 is a prime.

Together with 39428861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39428861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19714431 + 19714432.

It is an arithmetic number, because the mean of its divisors is an integer number (19714432).

Almost surely, 2^39428863 is an apocalyptic number.

39428863 is a deficient number, since it is larger than the sum of its proper divisors (1).

39428863 is an equidigital number, since it uses as much as digits as its factorization.

39428863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 39428863 is about 6279.2406388034. The cubic root of 39428863 is about 340.3596626560.

The spelling of 39428863 in words is "thirty-nine million, four hundred twenty-eight thousand, eight hundred sixty-three".