8398437061 has 4 divisors (see below), whose sum is σ = 9598213792. Its totient is φ = 7198660332.

The previous prime is 8398437017. The next prime is 8398437071. The reversal of 8398437061 is 1607348938.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8398437061 - 2⁹ = 8398436549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8398436996 and 8398437014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8398437071) 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, 599888355 + ... + 599888368.

It is an arithmetic number, because the mean of its divisors is an integer number (2399553448).

Almost surely, 2^8398437061 is an apocalyptic number.

It is an amenable number.

8398437061 is a deficient number, since it is larger than the sum of its proper divisors (1199776731).

8398437061 is a wasteful number, since it uses less digits than its factorization.

8398437061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199776730.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 8398437061 is about 91642.9869711807. The cubic root of 8398437061 is about 2032.6666291820. Note that the first 4 decimals are identical.

The spelling of 8398437061 in words is "eight billion, three hundred ninety-eight million, four hundred thirty-seven thousand, sixty-one".