416645387 has 2 divisors, whose sum is σ = 416645388. Its totient is φ = 416645386.

The previous prime is 416645323. The next prime is 416645393. The reversal of 416645387 is 783546614.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 416645387 - 2⁶ = 416645323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (416645087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208322693 + 208322694.

It is an arithmetic number, because the mean of its divisors is an integer number (208322694).

Almost surely, 2^416645387 is an apocalyptic number.

416645387 is a deficient number, since it is larger than the sum of its proper divisors (1).

416645387 is an equidigital number, since it uses as much as digits as its factorization.

416645387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 44.

The square root of 416645387 is about 20411.8932732856. The cubic root of 416645387 is about 746.8880758365. Note that the first 3 decimals are identical.

The spelling of 416645387 in words is "four hundred sixteen million, six hundred forty-five thousand, three hundred eighty-seven".