83400077 has 4 divisors (see below), whose sum is σ = 83418396. Its totient is φ = 83381760.

The previous prime is 83400067. The next prime is 83400089. The reversal of 83400077 is 77000438.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 51466276 + 31933801 = 7174^2 + 5651^2 .

It is a cyclic number.

It is not a de Polignac number, because 83400077 - 2⁴ = 83400061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83400017) 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, 3533 + ... + 13389.

It is an arithmetic number, because the mean of its divisors is an integer number (20854599).

Almost surely, 2^83400077 is an apocalyptic number.

It is an amenable number.

83400077 is a deficient number, since it is larger than the sum of its proper divisors (18319).

83400077 is an equidigital number, since it uses as much as digits as its factorization.

83400077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18318.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 83400077 is about 9132.3642612414. The cubic root of 83400077 is about 436.9068131763.

The spelling of 83400077 in words is "eighty-three million, four hundred thousand, seventy-seven".