90772847 has 8 divisors (see below), whose sum is σ = 99657552. Its totient is φ = 81993600.

The previous prime is 90772831. The next prime is 90772879. The reversal of 90772847 is 74827709.

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 90772847 - 2⁴ = 90772831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90772798 and 90772807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90772147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24554 + ... + 28007.

It is an arithmetic number, because the mean of its divisors is an integer number (12457194).

Almost surely, 2^90772847 is an apocalyptic number.

90772847 is a deficient number, since it is larger than the sum of its proper divisors (8884705).

90772847 is a wasteful number, since it uses less digits than its factorization.

90772847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52729.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 90772847 is about 9527.4785226732. The cubic root of 90772847 is about 449.4195759527.

It can be divided in two parts, 90772 and 847, that added together give a palindrome (91619).

The spelling of 90772847 in words is "ninety million, seven hundred seventy-two thousand, eight hundred forty-seven".