90425839 has 8 divisors (see below), whose sum is σ = 109423008. Its totient is φ = 72948480.

The previous prime is 90425837. The next prime is 90425843. The reversal of 90425839 is 93852409.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90425839 - 2¹ = 90425837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90425837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379822 + ... + 380059.

It is an arithmetic number, because the mean of its divisors is an integer number (13677876).

Almost surely, 2^90425839 is an apocalyptic number.

90425839 is a deficient number, since it is larger than the sum of its proper divisors (18997169).

90425839 is a wasteful number, since it uses less digits than its factorization.

90425839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759905.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 90425839 is about 9509.2501807451. The cubic root of 90425839 is about 448.8461616844.

The spelling of 90425839 in words is "ninety million, four hundred twenty-five thousand, eight hundred thirty-nine".