77090122 has 4 divisors (see below), whose sum is σ = 115635186. Its totient is φ = 38545060.

The previous prime is 77090119. The next prime is 77090137. The reversal of 77090122 is 22109077.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40717161 + 36372961 = 6381^2 + 6031^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19272529 + ... + 19272532.

Almost surely, 2^77090122 is an apocalyptic number.

77090122 is a deficient number, since it is larger than the sum of its proper divisors (38545064).

77090122 is a wasteful number, since it uses less digits than its factorization.

77090122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38545063.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 77090122 is about 8780.0980632337. The cubic root of 77090122 is about 425.5979992474.

Adding to 77090122 its reverse (22109077), we get a palindrome (99199199).

The spelling of 77090122 in words is "seventy-seven million, ninety thousand, one hundred twenty-two".