8416421237 has 16 divisors (see below), whose sum is σ = 9669721344. Its totient is φ = 7175952000.

The previous prime is 8416421161. The next prime is 8416421243. The reversal of 8416421237 is 7321246148.

It is a de Polignac number, because none of the positive numbers 2^k-8416421237 is a prime.

It is a super-2 number, since 2×8416421237² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8416421237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8416421737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1237787 + ... + 1244567.

It is an arithmetic number, because the mean of its divisors is an integer number (604357584).

Almost surely, 2^8416421237 is an apocalyptic number.

It is an amenable number.

8416421237 is a deficient number, since it is larger than the sum of its proper divisors (1253300107).

8416421237 is a wasteful number, since it uses less digits than its factorization.

8416421237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7700.

The product of its digits is 64512, while the sum is 38.

The square root of 8416421237 is about 91741.0553514619. The cubic root of 8416421237 is about 2034.1164930845.

The spelling of 8416421237 in words is "eight billion, four hundred sixteen million, four hundred twenty-one thousand, two hundred thirty-seven".