438701889097 has 2 divisors, whose sum is σ = 438701889098. Its totient is φ = 438701889096.

The previous prime is 438701889019. The next prime is 438701889127. The reversal of 438701889097 is 790988107834.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269738964496 + 168962924601 = 519364^2 + 411051^2 .

It is a cyclic number.

It is not a de Polignac number, because 438701889097 - 2²³ = 438693500489 is a prime.

It is not a weakly prime, because it can be changed into another prime (438701889497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219350944548 + 219350944549.

It is an arithmetic number, because the mean of its divisors is an integer number (219350944549).

Almost surely, 2^438701889097 is an apocalyptic number.

It is an amenable number.

438701889097 is a deficient number, since it is larger than the sum of its proper divisors (1).

438701889097 is an equidigital number, since it uses as much as digits as its factorization.

438701889097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24385536, while the sum is 64.

The spelling of 438701889097 in words is "four hundred thirty-eight billion, seven hundred one million, eight hundred eighty-nine thousand, ninety-seven".