474655639 has 2 divisors, whose sum is σ = 474655640. Its totient is φ = 474655638.

The previous prime is 474655637. The next prime is 474655693. The reversal of 474655639 is 936556474.

It is a happy number.

Together with next prime (474655693) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 474655639 - 2¹ = 474655637 is a prime.

Together with 474655637, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 474655592 and 474655601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (474655637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237327819 + 237327820.

It is an arithmetic number, because the mean of its divisors is an integer number (237327820).

Almost surely, 2^474655639 is an apocalyptic number.

474655639 is a deficient number, since it is larger than the sum of its proper divisors (1).

474655639 is an equidigital number, since it uses as much as digits as its factorization.

474655639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 49.

The square root of 474655639 is about 21786.5931021810. The cubic root of 474655639 is about 780.0567781373.

The spelling of 474655639 in words is "four hundred seventy-four million, six hundred fifty-five thousand, six hundred thirty-nine".