90459937 has 2 divisors, whose sum is σ = 90459938. Its totient is φ = 90459936.

The previous prime is 90459911. The next prime is 90459973. The reversal of 90459937 is 73995409.

Together with next prime (90459973) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85082176 + 5377761 = 9224^2 + 2319^2 .

It is an emirp because it is prime and its reverse (73995409) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90459937 - 2¹¹ = 90457889 is a prime.

It is not a weakly prime, because it can be changed into another prime (90450937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45229968 + 45229969.

It is an arithmetic number, because the mean of its divisors is an integer number (45229969).

Almost surely, 2^90459937 is an apocalyptic number.

It is an amenable number.

90459937 is a deficient number, since it is larger than the sum of its proper divisors (1).

90459937 is an equidigital number, since it uses as much as digits as its factorization.

90459937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 90459937 is about 9511.0428976007. The cubic root of 90459937 is about 448.9025719365.

The spelling of 90459937 in words is "ninety million, four hundred fifty-nine thousand, nine hundred thirty-seven".