90825387 has 4 divisors (see below), whose sum is σ = 121100520. Its totient is φ = 60550256.

The previous prime is 90825353. The next prime is 90825437. The reversal of 90825387 is 78352809.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90825387 - 2¹¹ = 90823339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90825307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15137562 + ... + 15137567.

It is an arithmetic number, because the mean of its divisors is an integer number (30275130).

Almost surely, 2^90825387 is an apocalyptic number.

90825387 is a deficient number, since it is larger than the sum of its proper divisors (30275133).

90825387 is a wasteful number, since it uses less digits than its factorization.

90825387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30275132.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 90825387 is about 9530.2354115730. The cubic root of 90825387 is about 449.5062683615.

The spelling of 90825387 in words is "ninety million, eight hundred twenty-five thousand, three hundred eighty-seven".