90907849 has 8 divisors (see below), whose sum is σ = 93719520. Its totient is φ = 88138656.

The previous prime is 90907847. The next prime is 90907877. The reversal of 90907849 is 94870909.

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 90907849 - 2¹ = 90907847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90907799 and 90907808.

It is not an unprimeable number, because it can be changed into a prime (90907847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6247 + ... + 14860.

It is an arithmetic number, because the mean of its divisors is an integer number (11714940).

Almost surely, 2^90907849 is an apocalyptic number.

It is an amenable number.

90907849 is a deficient number, since it is larger than the sum of its proper divisors (2811671).

90907849 is a wasteful number, since it uses less digits than its factorization.

90907849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21239.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 90907849 is about 9534.5607659713. The cubic root of 90907849 is about 449.6422654830.

The spelling of 90907849 in words is "ninety million, nine hundred seven thousand, eight hundred forty-nine".