438737149 has 2 divisors, whose sum is σ = 438737150. Its totient is φ = 438737148.

The previous prime is 438737137. The next prime is 438737171. The reversal of 438737149 is 941737834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253287225 + 185449924 = 15915^2 + 13618^2 .

It is a cyclic number.

It is not a de Polignac number, because 438737149 - 2¹⁵ = 438704381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 438737099 and 438737108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438737179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219368574 + 219368575.

It is an arithmetic number, because the mean of its divisors is an integer number (219368575).

Almost surely, 2^438737149 is an apocalyptic number.

It is an amenable number.

438737149 is a deficient number, since it is larger than the sum of its proper divisors (1).

438737149 is an equidigital number, since it uses as much as digits as its factorization.

438737149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 438737149 is about 20946.0533036656. The cubic root of 438737149 is about 759.8621339257.

The spelling of 438737149 in words is "four hundred thirty-eight million, seven hundred thirty-seven thousand, one hundred forty-nine".