438750007 has 2 divisors, whose sum is σ = 438750008. Its totient is φ = 438750006.

The previous prime is 438749977. The next prime is 438750017. The reversal of 438750007 is 700057834.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438750007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438750017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219375003 + 219375004.

It is an arithmetic number, because the mean of its divisors is an integer number (219375004).

Almost surely, 2^438750007 is an apocalyptic number.

438750007 is a deficient number, since it is larger than the sum of its proper divisors (1).

438750007 is an equidigital number, since it uses as much as digits as its factorization.

438750007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 438750007 is about 20946.3602327469. The cubic root of 438750007 is about 759.8695569062.

The spelling of 438750007 in words is "four hundred thirty-eight million, seven hundred fifty thousand, seven".