77949338 has 16 divisors (see below), whose sum is σ = 120528000. Its totient is φ = 37791600.

The previous prime is 77949331. The next prime is 77949353. The reversal of 77949338 is 83394977.

It is not an unprimeable number, because it can be changed into a prime (77949331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4163 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (7533000).

Almost surely, 2^77949338 is an apocalyptic number.

77949338 is a deficient number, since it is larger than the sum of its proper divisors (42578662).

77949338 is a wasteful number, since it uses less digits than its factorization.

77949338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9133.

The product of its digits is 1143072, while the sum is 50.

The square root of 77949338 is about 8828.8922294929. The cubic root of 77949338 is about 427.1733432485.

It can be divided in two parts, 77949 and 338, that added together give a palindrome (78287).

The spelling of 77949338 in words is "seventy-seven million, nine hundred forty-nine thousand, three hundred thirty-eight".