90988847 has 2 divisors, whose sum is σ = 90988848. Its totient is φ = 90988846.

The previous prime is 90988823. The next prime is 90988867. The reversal of 90988847 is 74888909.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90988847 - 2⁸ = 90988591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90988867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45494423 + 45494424.

It is an arithmetic number, because the mean of its divisors is an integer number (45494424).

Almost surely, 2^90988847 is an apocalyptic number.

90988847 is a deficient number, since it is larger than the sum of its proper divisors (1).

90988847 is an equidigital number, since it uses as much as digits as its factorization.

90988847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 90988847 is about 9538.8074202177. The cubic root of 90988847 is about 449.7757681208.

The spelling of 90988847 in words is "ninety million, nine hundred eighty-eight thousand, eight hundred forty-seven".