90779109 has 8 divisors (see below), whose sum is σ = 122743872. Its totient is φ = 59666880.

The previous prime is 90779083. The next prime is 90779113. The reversal of 90779109 is 90197709.

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

It is not a de Polignac number, because 90779109 - 2⁷ = 90778981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90779159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212884 + ... + 213309.

It is an arithmetic number, because the mean of its divisors is an integer number (15342984).

Almost surely, 2^90779109 is an apocalyptic number.

It is an amenable number.

90779109 is a deficient number, since it is larger than the sum of its proper divisors (31964763).

90779109 is a wasteful number, since it uses less digits than its factorization.

90779109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426267.

The product of its (nonzero) digits is 35721, while the sum is 42.

The square root of 90779109 is about 9527.8071454034. The cubic root of 90779109 is about 449.4299101762.

The spelling of 90779109 in words is "ninety million, seven hundred seventy-nine thousand, one hundred nine".