90479143 has 2 divisors, whose sum is σ = 90479144. Its totient is φ = 90479142.

The previous prime is 90479119. The next prime is 90479149. The reversal of 90479143 is 34197409.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90479143 - 2²¹ = 88381991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90479149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45239571 + 45239572.

It is an arithmetic number, because the mean of its divisors is an integer number (45239572).

Almost surely, 2^90479143 is an apocalyptic number.

90479143 is a deficient number, since it is larger than the sum of its proper divisors (1).

90479143 is an equidigital number, since it uses as much as digits as its factorization.

90479143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 90479143 is about 9512.0525124707. The cubic root of 90479143 is about 448.9343392690.

The spelling of 90479143 in words is "ninety million, four hundred seventy-nine thousand, one hundred forty-three".