90634039 has 2 divisors, whose sum is σ = 90634040. Its totient is φ = 90634038.

The previous prime is 90634003. The next prime is 90634057. The reversal of 90634039 is 93043609.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90634039 - 2¹¹ = 90631991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90633995 and 90634013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90634079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45317019 + 45317020.

It is an arithmetic number, because the mean of its divisors is an integer number (45317020).

Almost surely, 2^90634039 is an apocalyptic number.

90634039 is a deficient number, since it is larger than the sum of its proper divisors (1).

90634039 is an equidigital number, since it uses as much as digits as its factorization.

90634039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 90634039 is about 9520.1911220311. The cubic root of 90634039 is about 449.1903779788.

The spelling of 90634039 in words is "ninety million, six hundred thirty-four thousand, thirty-nine".