90421011 has 12 divisors (see below), whose sum is σ = 138291192. Its totient is φ = 56734656.

The previous prime is 90421003. The next prime is 90421013. The reversal of 90421011 is 11012409.

It is not a de Polignac number, because 90421011 - 2³ = 90421003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90421013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 295341 + ... + 295646.

It is an arithmetic number, because the mean of its divisors is an integer number (11524266).

Almost surely, 2^90421011 is an apocalyptic number.

90421011 is a deficient number, since it is larger than the sum of its proper divisors (47870181).

90421011 is a wasteful number, since it uses less digits than its factorization.

90421011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591010 (or 591007 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 90421011 is about 9508.9963192758. The cubic root of 90421011 is about 448.8381733046.

The spelling of 90421011 in words is "ninety million, four hundred twenty-one thousand, eleven".