90989029 has 4 divisors (see below), whose sum is σ = 91013440. Its totient is φ = 90964620.

The previous prime is 90989027. The next prime is 90989053. The reversal of 90989029 is 92098909.

It is a happy number.

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 not a de Polignac number, because 90989029 - 2¹ = 90989027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90989029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90989027) 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, 5319 + ... + 14500.

It is an arithmetic number, because the mean of its divisors is an integer number (22753360).

Almost surely, 2^90989029 is an apocalyptic number.

It is an amenable number.

90989029 is a deficient number, since it is larger than the sum of its proper divisors (24411).

90989029 is a wasteful number, since it uses less digits than its factorization.

90989029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24410.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 90989029 is about 9538.8169601896. The cubic root of 90989029 is about 449.7760680078.

The spelling of 90989029 in words is "ninety million, nine hundred eighty-nine thousand, twenty-nine".