388227461 has 2 divisors, whose sum is σ = 388227462. Its totient is φ = 388227460.

The previous prime is 388227439. The next prime is 388227481. The reversal of 388227461 is 164722883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380991361 + 7236100 = 19519^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 388227461 - 2¹⁸ = 387965317 is a prime.

It is a super-2 number, since 2×388227461² = 301441122949013042, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388227481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194113730 + 194113731.

It is an arithmetic number, because the mean of its divisors is an integer number (194113731).

Almost surely, 2^388227461 is an apocalyptic number.

It is an amenable number.

388227461 is a deficient number, since it is larger than the sum of its proper divisors (1).

388227461 is an equidigital number, since it uses as much as digits as its factorization.

388227461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 41.

The square root of 388227461 is about 19703.4885489854. The cubic root of 388227461 is about 729.5058023733.

The spelling of 388227461 in words is "three hundred eighty-eight million, two hundred twenty-seven thousand, four hundred sixty-one".