8419945 has 16 divisors (see below), whose sum is σ = 10707840. Its totient is φ = 6338304.

The previous prime is 8419933. The next prime is 8419967. The reversal of 8419945 is 5499148.

It is a cyclic number.

It is not a de Polignac number, because 8419945 - 2²³ = 31337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8419898 and 8419907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24817 + ... + 25153.

It is an arithmetic number, because the mean of its divisors is an integer number (669240).

Almost surely, 2^8419945 is an apocalyptic number.

It is an amenable number.

8419945 is a deficient number, since it is larger than the sum of its proper divisors (2287895).

8419945 is a wasteful number, since it uses less digits than its factorization.

8419945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624.

The product of its digits is 51840, while the sum is 40.

The square root of 8419945 is about 2901.7141485680. The cubic root of 8419945 is about 203.4400332820.

The spelling of 8419945 in words is "eight million, four hundred nineteen thousand, nine hundred forty-five".