90993711 has 8 divisors (see below), whose sum is σ = 125238784. Its totient is φ = 58705560.

The previous prime is 90993703. The next prime is 90993743. The reversal of 90993711 is 11739909.

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

It is not a de Polignac number, because 90993711 - 2³ = 90993703 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 90993711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90993751) 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, 489121 + ... + 489306.

It is an arithmetic number, because the mean of its divisors is an integer number (15654848).

Almost surely, 2^90993711 is an apocalyptic number.

90993711 is a deficient number, since it is larger than the sum of its proper divisors (34245073).

90993711 is a wasteful number, since it uses less digits than its factorization.

90993711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978461.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 90993711 is about 9539.0623753071. The cubic root of 90993711 is about 449.7837825475.

The spelling of 90993711 in words is "ninety million, nine hundred ninety-three thousand, seven hundred eleven".