88438213 has 2 divisors, whose sum is σ = 88438214. Its totient is φ = 88438212.

The previous prime is 88438201. The next prime is 88438223. The reversal of 88438213 is 31283488.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88228449 + 209764 = 9393^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 88438213 - 2²¹ = 86341061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88438223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44219106 + 44219107.

It is an arithmetic number, because the mean of its divisors is an integer number (44219107).

Almost surely, 2^88438213 is an apocalyptic number.

It is an amenable number.

88438213 is a deficient number, since it is larger than the sum of its proper divisors (1).

88438213 is an equidigital number, since it uses as much as digits as its factorization.

88438213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 37.

The square root of 88438213 is about 9404.1593457363. The cubic root of 88438213 is about 445.5331118638.

The spelling of 88438213 in words is "eighty-eight million, four hundred thirty-eight thousand, two hundred thirteen".