90955387 has 4 divisors (see below), whose sum is σ = 92890656. Its totient is φ = 89020120.

The previous prime is 90955379. The next prime is 90955391. The reversal of 90955387 is 78355909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78355909 = 47 ⋅1667147.

It is a cyclic number.

It is not a de Polignac number, because 90955387 - 2³ = 90955379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90955357) 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 in 3 ways as a sum of consecutive naturals, for example, 967564 + ... + 967657.

It is an arithmetic number, because the mean of its divisors is an integer number (23222664).

Almost surely, 2^90955387 is an apocalyptic number.

90955387 is a deficient number, since it is larger than the sum of its proper divisors (1935269).

90955387 is a wasteful number, since it uses less digits than its factorization.

90955387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935268.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 90955387 is about 9537.0533709317. The cubic root of 90955387 is about 449.7206282407.

The spelling of 90955387 in words is "ninety million, nine hundred fifty-five thousand, three hundred eighty-seven".