8434437377 has 2 divisors, whose sum is σ = 8434437378. Its totient is φ = 8434437376.

The previous prime is 8434437373. The next prime is 8434437419. The reversal of 8434437377 is 7737344348.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5796690496 + 2637746881 = 76136^2 + 51359^2 .

It is a cyclic number.

It is not a de Polignac number, because 8434437377 - 2² = 8434437373 is a prime.

It is a super-2 number, since 2×8434437377² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8434437373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4217218688 + 4217218689.

It is an arithmetic number, because the mean of its divisors is an integer number (4217218689).

Almost surely, 2^8434437377 is an apocalyptic number.

It is an amenable number.

8434437377 is a deficient number, since it is larger than the sum of its proper divisors (1).

8434437377 is an equidigital number, since it uses as much as digits as its factorization.

8434437377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4741632, while the sum is 50.

The square root of 8434437377 is about 91839.1930332579. The cubic root of 8434437377 is about 2035.5668644798.

The spelling of 8434437377 in words is "eight billion, four hundred thirty-four million, four hundred thirty-seven thousand, three hundred seventy-seven".