238420747 has 2 divisors, whose sum is σ = 238420748. Its totient is φ = 238420746.

The previous prime is 238420739. The next prime is 238420753. The reversal of 238420747 is 747024832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238420747 - 2³ = 238420739 is a prime.

It is not a weakly prime, because it can be changed into another prime (238420727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119210373 + 119210374.

It is an arithmetic number, because the mean of its divisors is an integer number (119210374).

Almost surely, 2^238420747 is an apocalyptic number.

238420747 is a deficient number, since it is larger than the sum of its proper divisors (1).

238420747 is an equidigital number, since it uses as much as digits as its factorization.

238420747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 238420747 is about 15440.8790876686. The cubic root of 238420747 is about 620.0804153413.

The spelling of 238420747 in words is "two hundred thirty-eight million, four hundred twenty thousand, seven hundred forty-seven".