438709087 has 2 divisors, whose sum is σ = 438709088. Its totient is φ = 438709086.

The previous prime is 438709057. The next prime is 438709097. The reversal of 438709087 is 780907834.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438709087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438709057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219354543 + 219354544.

It is an arithmetic number, because the mean of its divisors is an integer number (219354544).

Almost surely, 2^438709087 is an apocalyptic number.

438709087 is a deficient number, since it is larger than the sum of its proper divisors (1).

438709087 is an equidigital number, since it uses as much as digits as its factorization.

438709087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 438709087 is about 20945.3834292906. The cubic root of 438709087 is about 759.8459331049.

The spelling of 438709087 in words is "four hundred thirty-eight million, seven hundred nine thousand, eighty-seven".