90394277 has 4 divisors (see below), whose sum is σ = 91001100. Its totient is φ = 89787456.

The previous prime is 90394273. The next prime is 90394303. The reversal of 90394277 is 77249309.

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 31427236 + 58967041 = 5606^2 + 7679^2 .

It is a cyclic number.

It is not a de Polignac number, because 90394277 - 2² = 90394273 is a prime.

It is a super-2 number, since 2×90394277² = 16342250628705458, 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 (90394273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303188 + ... + 303485.

It is an arithmetic number, because the mean of its divisors is an integer number (22750275).

Almost surely, 2^90394277 is an apocalyptic number.

It is an amenable number.

90394277 is a deficient number, since it is larger than the sum of its proper divisors (606823).

90394277 is a wasteful number, since it uses less digits than its factorization.

90394277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606822.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 90394277 is about 9507.5904939159. The cubic root of 90394277 is about 448.7939342413.

The spelling of 90394277 in words is "ninety million, three hundred ninety-four thousand, two hundred seventy-seven".