90869511 has 8 divisors (see below), whose sum is σ = 121373824. Its totient is φ = 60472440.

The previous prime is 90869509. The next prime is 90869551. The reversal of 90869511 is 11596809.

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

It is not a de Polignac number, because 90869511 - 2¹ = 90869509 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 90869511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90869501) 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, 24811 + ... + 28236.

It is an arithmetic number, because the mean of its divisors is an integer number (15171728).

Almost surely, 2^90869511 is an apocalyptic number.

90869511 is a deficient number, since it is larger than the sum of its proper divisors (30504313).

90869511 is a wasteful number, since it uses less digits than its factorization.

90869511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53621.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 90869511 is about 9532.5500785467. The cubic root of 90869511 is about 449.5790483196.

The spelling of 90869511 in words is "ninety million, eight hundred sixty-nine thousand, five hundred eleven".