90858739 has 2 divisors, whose sum is σ = 90858740. Its totient is φ = 90858738.

The previous prime is 90858701. The next prime is 90858749. The reversal of 90858739 is 93785809.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90858739 - 2⁹ = 90858227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90858692 and 90858701.

It is not a weakly prime, because it can be changed into another prime (90858749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45429369 + 45429370.

It is an arithmetic number, because the mean of its divisors is an integer number (45429370).

Almost surely, 2^90858739 is an apocalyptic number.

90858739 is a deficient number, since it is larger than the sum of its proper divisors (1).

90858739 is an equidigital number, since it uses as much as digits as its factorization.

90858739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 90858739 is about 9531.9850503450. The cubic root of 90858739 is about 449.5612827096.

The spelling of 90858739 in words is "ninety million, eight hundred fifty-eight thousand, seven hundred thirty-nine".