90259814 has 4 divisors (see below), whose sum is σ = 135389724. Its totient is φ = 45129906.

The previous prime is 90259811. The next prime is 90259831. The reversal of 90259814 is 41895209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41895209 = 19 ⋅2205011.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90259811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22564952 + ... + 22564955.

It is an arithmetic number, because the mean of its divisors is an integer number (33847431).

Almost surely, 2^90259814 is an apocalyptic number.

90259814 is a deficient number, since it is larger than the sum of its proper divisors (45129910).

90259814 is a wasteful number, since it uses less digits than its factorization.

90259814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45129909.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 90259814 is about 9500.5165122745. The cubic root of 90259814 is about 448.5712943150.

The spelling of 90259814 in words is "ninety million, two hundred fifty-nine thousand, eight hundred fourteen".