90061423 has 4 divisors (see below), whose sum is σ = 90120040. Its totient is φ = 90002808.

The previous prime is 90061409. The next prime is 90061429. The reversal of 90061423 is 32416009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32416009 = 367 ⋅88327.

It is a cyclic number.

It is not a de Polignac number, because 90061423 - 2²¹ = 87964271 is a prime.

It is a super-2 number, since 2×90061423² = 16222119825569858, 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 (90061429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26940 + ... + 30097.

It is an arithmetic number, because the mean of its divisors is an integer number (22530010).

Almost surely, 2^90061423 is an apocalyptic number.

90061423 is a deficient number, since it is larger than the sum of its proper divisors (58617).

90061423 is a wasteful number, since it uses less digits than its factorization.

90061423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58616.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 90061423 is about 9490.0697046966. The cubic root of 90061423 is about 448.2424001104.

The spelling of 90061423 in words is "ninety million, sixty-one thousand, four hundred twenty-three".