90719 has 4 divisors (see below), whose sum is σ = 91896. Its totient is φ = 89544.

The previous prime is 90709. The next prime is 90731. The reversal of 90719 is 91709.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91709 = 293 ⋅313.

It is a cyclic number.

It is not a de Polignac number, because 90719 - 2⁴ = 90703 is a prime.

It is a super-2 number, since 2×90719² = 16459873922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90709) 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, 464 + ... + 629.

It is an arithmetic number, because the mean of its divisors is an integer number (22974).

2⁹⁰⁷¹⁹ is an apocalyptic number.

90719 is a deficient number, since it is larger than the sum of its proper divisors (1177).

90719 is a wasteful number, since it uses less digits than its factorization.

90719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 90719 is about 301.1959495080. The cubic root of 90719 is about 44.9330692241.

Subtracting 90719 from its reverse (91709), we obtain a triangular number (990 = T₄₄).

The spelling of 90719 in words is "ninety thousand, seven hundred nineteen".