90449201 has 8 divisors (see below), whose sum is σ = 93372840. Its totient is φ = 87550848.

The previous prime is 90449171. The next prime is 90449207. The reversal of 90449201 is 10294409.

It can be written as a sum of positive squares in 4 ways, for example, as 31528225 + 58920976 = 5615^2 + 7676^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 90449201 - 2⁶ = 90449137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90449207) 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 in 7 ways as a sum of consecutive naturals, for example, 1085 + ... + 13493.

It is an arithmetic number, because the mean of its divisors is an integer number (11671605).

Almost surely, 2^90449201 is an apocalyptic number.

It is an amenable number.

90449201 is a deficient number, since it is larger than the sum of its proper divisors (2923639).

90449201 is a wasteful number, since it uses less digits than its factorization.

90449201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12643.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 90449201 is about 9510.4784842825. The cubic root of 90449201 is about 448.8848122930.

It can be divided in two parts, 904 and 49201, that added together give a palindrome (50105).

The spelling of 90449201 in words is "ninety million, four hundred forty-nine thousand, two hundred one".