90959801 has 4 divisors (see below), whose sum is σ = 93418212. Its totient is φ = 88501392.

The previous prime is 90959777. The next prime is 90959831. The reversal of 90959801 is 10895909.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72675625 + 18284176 = 8525^2 + 4276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90959801 is a prime.

It is a super-3 number, since 3×90959801³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90959831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1229150 + ... + 1229223.

It is an arithmetic number, because the mean of its divisors is an integer number (23354553).

Almost surely, 2^90959801 is an apocalyptic number.

It is an amenable number.

90959801 is a deficient number, since it is larger than the sum of its proper divisors (2458411).

90959801 is a wasteful number, since it uses less digits than its factorization.

90959801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458410.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 90959801 is about 9537.2847813201. The cubic root of 90959801 is about 449.7279029967.

The spelling of 90959801 in words is "ninety million, nine hundred fifty-nine thousand, eight hundred one".