920090387 has 2 divisors, whose sum is σ = 920090388. Its totient is φ = 920090386.

The previous prime is 920090363. The next prime is 920090399. The reversal of 920090387 is 783090029.

It is a strong prime.

It is an emirp because it is prime and its reverse (783090029) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 920090387 - 2¹⁰ = 920089363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 920090387.

It is not a weakly prime, because it can be changed into another prime (920090887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460045193 + 460045194.

It is an arithmetic number, because the mean of its divisors is an integer number (460045194).

Almost surely, 2^920090387 is an apocalyptic number.

920090387 is a deficient number, since it is larger than the sum of its proper divisors (1).

920090387 is an equidigital number, since it uses as much as digits as its factorization.

920090387 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 38.

The square root of 920090387 is about 30332.9917251827. The cubic root of 920090387 is about 972.6206764027.

The spelling of 920090387 in words is "nine hundred twenty million, ninety thousand, three hundred eighty-seven".