90626869 has 4 divisors (see below), whose sum is σ = 90702796. Its totient is φ = 90550944.

The previous prime is 90626863. The next prime is 90626917. The reversal of 90626869 is 96862609.

It is a happy number.

90626869 is nontrivially palindromic in base 2.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45562500 + 45064369 = 6750^2 + 6713^2 .

It is a cyclic number.

It is not a de Polignac number, because 90626869 - 2⁷ = 90626741 is a prime.

It is a super-2 number, since 2×90626869² = 16426458769486322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90626863) 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, 36144 + ... + 38569.

It is an arithmetic number, because the mean of its divisors is an integer number (22675699).

Almost surely, 2^90626869 is an apocalyptic number.

It is an amenable number.

90626869 is a deficient number, since it is larger than the sum of its proper divisors (75927).

90626869 is a wasteful number, since it uses less digits than its factorization.

90626869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75926.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 90626869 is about 9519.8145465130. The cubic root of 90626869 is about 449.1785326134.

It can be divided in two parts, 9062 and 6869, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 90626869 in words is "ninety million, six hundred twenty-six thousand, eight hundred sixty-nine".