77743434 has 8 divisors (see below), whose sum is σ = 155486880. Its totient is φ = 25914476.

The previous prime is 77743433. The next prime is 77743453. The reversal of 77743434 is 43434777.

It is a sphenic number, since it is the product of 3 distinct primes.

77743434 is an admirable number.

It is a super-2 number, since 2×77743434² = 12088083060224712, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 77743392 and 77743401.

It is not an unprimeable number, because it can be changed into a prime (77743433) 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, 6478614 + ... + 6478625.

It is an arithmetic number, because the mean of its divisors is an integer number (19435860).

Almost surely, 2^77743434 is an apocalyptic number.

77743434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77743434 is a wasteful number, since it uses less digits than its factorization.

77743434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12957244.

The product of its digits is 197568, while the sum is 39.

The square root of 77743434 is about 8817.2237127114. The cubic root of 77743434 is about 426.7968839466.

The spelling of 77743434 in words is "seventy-seven million, seven hundred forty-three thousand, four hundred thirty-four".