845209963 has 4 divisors (see below), whose sum is σ = 910226128. Its totient is φ = 780193800.

The previous prime is 845209951. The next prime is 845209979. The reversal of 845209963 is 369902548.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 845209963 - 2¹³ = 845201771 is a prime.

It is a super-2 number, since 2×845209963² = 1428759763108922738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (845209903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32508063 + ... + 32508088.

It is an arithmetic number, because the mean of its divisors is an integer number (227556532).

Almost surely, 2^845209963 is an apocalyptic number.

845209963 is a deficient number, since it is larger than the sum of its proper divisors (65016165).

845209963 is a wasteful number, since it uses less digits than its factorization.

845209963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65016164.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 845209963 is about 29072.4949565736. The cubic root of 845209963 is about 945.4854920705.

The spelling of 845209963 in words is "eight hundred forty-five million, two hundred nine thousand, nine hundred sixty-three".