90789029 has 4 divisors (see below), whose sum is σ = 90898080. Its totient is φ = 90679980.

The previous prime is 90788977. The next prime is 90789031. The reversal of 90789029 is 92098709.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90789029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90789079) 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 3 ways as a sum of consecutive naturals, for example, 53267 + ... + 54944.

It is an arithmetic number, because the mean of its divisors is an integer number (22724520).

Almost surely, 2^90789029 is an apocalyptic number.

It is an amenable number.

90789029 is a deficient number, since it is larger than the sum of its proper divisors (109051).

90789029 is a wasteful number, since it uses less digits than its factorization.

90789029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109050.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 90789029 is about 9528.3277126682. The cubic root of 90789029 is about 449.4462802506.

The spelling of 90789029 in words is "ninety million, seven hundred eighty-nine thousand, twenty-nine".