438717121 has 2 divisors, whose sum is σ = 438717122. Its totient is φ = 438717120.

The previous prime is 438717109. The next prime is 438717143. The reversal of 438717121 is 121717834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 293779600 + 144937521 = 17140^2 + 12039^2 .

It is a cyclic number.

It is not a de Polignac number, because 438717121 - 2⁹ = 438716609 is a prime.

It is not a weakly prime, because it can be changed into another prime (438717161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219358560 + 219358561.

It is an arithmetic number, because the mean of its divisors is an integer number (219358561).

Almost surely, 2^438717121 is an apocalyptic number.

It is an amenable number.

438717121 is a deficient number, since it is larger than the sum of its proper divisors (1).

438717121 is an equidigital number, since it uses as much as digits as its factorization.

438717121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 34.

The square root of 438717121 is about 20945.5752129179. The cubic root of 438717121 is about 759.8505713836.

The spelling of 438717121 in words is "four hundred thirty-eight million, seven hundred seventeen thousand, one hundred twenty-one".