90888437 has 2 divisors, whose sum is σ = 90888438. Its totient is φ = 90888436.

The previous prime is 90888401. The next prime is 90888467. The reversal of 90888437 is 73488809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89226916 + 1661521 = 9446^2 + 1289^2 .

It is a cyclic number.

It is not a de Polignac number, because 90888437 - 2¹⁰ = 90887413 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 90888391 and 90888400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90888467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45444218 + 45444219.

It is an arithmetic number, because the mean of its divisors is an integer number (45444219).

Almost surely, 2^90888437 is an apocalyptic number.

It is an amenable number.

90888437 is a deficient number, since it is larger than the sum of its proper divisors (1).

90888437 is an equidigital number, since it uses as much as digits as its factorization.

90888437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 90888437 is about 9533.5427308005. The cubic root of 90888437 is about 449.6102584300.

The spelling of 90888437 in words is "ninety million, eight hundred eighty-eight thousand, four hundred thirty-seven".