938494457 has 2 divisors, whose sum is σ = 938494458. Its totient is φ = 938494456.

The previous prime is 938494439. The next prime is 938494477. The reversal of 938494457 is 754494839.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 873143401 + 65351056 = 29549^2 + 8084^2 .

It is a cyclic number.

It is not a de Polignac number, because 938494457 - 2²² = 934300153 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 938494399 and 938494408.

It is not a weakly prime, because it can be changed into another prime (938494477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469247228 + 469247229.

It is an arithmetic number, because the mean of its divisors is an integer number (469247229).

Almost surely, 2^938494457 is an apocalyptic number.

It is an amenable number.

938494457 is a deficient number, since it is larger than the sum of its proper divisors (1).

938494457 is an equidigital number, since it uses as much as digits as its factorization.

938494457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 53.

The square root of 938494457 is about 30634.8568953733. The cubic root of 938494457 is about 979.0628473390.

The spelling of 938494457 in words is "nine hundred thirty-eight million, four hundred ninety-four thousand, four hundred fifty-seven".