90239061 has 16 divisors (see below), whose sum is σ = 131632128. Its totient is φ = 54534000.

The previous prime is 90239057. The next prime is 90239063. The reversal of 90239061 is 16093209.

It is not a de Polignac number, because 90239061 - 2² = 90239057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90239063) 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, 8386 + ... + 15836.

It is an arithmetic number, because the mean of its divisors is an integer number (8227008).

Almost surely, 2^90239061 is an apocalyptic number.

It is an amenable number.

90239061 is a deficient number, since it is larger than the sum of its proper divisors (41393067).

90239061 is a wasteful number, since it uses less digits than its factorization.

90239061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7832.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 90239061 is about 9499.4242457109. The cubic root of 90239061 is about 448.5369124078.

The spelling of 90239061 in words is "ninety million, two hundred thirty-nine thousand, sixty-one".