438342451 has 2 divisors, whose sum is σ = 438342452. Its totient is φ = 438342450.

The previous prime is 438342409. The next prime is 438342461. The reversal of 438342451 is 154243834.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438342451 is a prime.

It is not a weakly prime, because it can be changed into another prime (438342461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219171225 + 219171226.

It is an arithmetic number, because the mean of its divisors is an integer number (219171226).

Almost surely, 2^438342451 is an apocalyptic number.

438342451 is a deficient number, since it is larger than the sum of its proper divisors (1).

438342451 is an equidigital number, since it uses as much as digits as its factorization.

438342451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 34.

The square root of 438342451 is about 20936.6294087659. The cubic root of 438342451 is about 759.6342024279.

The spelling of 438342451 in words is "four hundred thirty-eight million, three hundred forty-two thousand, four hundred fifty-one".