84030777 has 40 divisors (see below), whose sum is σ = 131725440. Its totient is φ = 53313120.

The previous prime is 84030773. The next prime is 84030781. The reversal of 84030777 is 77703048.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (84030773) and next prime (84030781).

It is not a de Polignac number, because 84030777 - 2² = 84030773 is a prime.

It is a super-2 number, since 2×84030777² = 14122342966447458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84030773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 194752 + ... + 195182.

It is an arithmetic number, because the mean of its divisors is an integer number (3293136).

Almost surely, 2^84030777 is an apocalyptic number.

84030777 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

84030777 is a deficient number, since it is larger than the sum of its proper divisors (47694663).

84030777 is a wasteful number, since it uses less digits than its factorization.

84030777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 84030777 is about 9166.8302591463. The cubic root of 84030777 is about 438.0053949420.

The spelling of 84030777 in words is "eighty-four million, thirty thousand, seven hundred seventy-seven".