90453493 has 16 divisors (see below), whose sum is σ = 100509696. Its totient is φ = 80861760.

The previous prime is 90453469. The next prime is 90453527. The reversal of 90453493 is 39435409.

It is a cyclic number.

It is not a de Polignac number, because 90453493 - 2²¹ = 88356341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90453403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183978 + ... + 184468.

It is an arithmetic number, because the mean of its divisors is an integer number (6281856).

Almost surely, 2^90453493 is an apocalyptic number.

It is an amenable number.

90453493 is a deficient number, since it is larger than the sum of its proper divisors (10056203).

90453493 is a wasteful number, since it uses less digits than its factorization.

90453493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 90453493 is about 9510.7041274555. The cubic root of 90453493 is about 448.8919123489.

The spelling of 90453493 in words is "ninety million, four hundred fifty-three thousand, four hundred ninety-three".