474736639 has 8 divisors (see below), whose sum is σ = 512708112. Its totient is φ = 436972800.

The previous prime is 474736621. The next prime is 474736643. The reversal of 474736639 is 936637474.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 474736639 - 2²¹ = 472639487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 474736592 and 474736601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (474736439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47137 + ... + 56314.

It is an arithmetic number, because the mean of its divisors is an integer number (64088514).

Almost surely, 2^474736639 is an apocalyptic number.

474736639 is a deficient number, since it is larger than the sum of its proper divisors (37971473).

474736639 is a wasteful number, since it uses less digits than its factorization.

474736639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103817.

The product of its digits is 2286144, while the sum is 49.

The square root of 474736639 is about 21788.4519642860. The cubic root of 474736639 is about 780.1011478516.

The spelling of 474736639 in words is "four hundred seventy-four million, seven hundred thirty-six thousand, six hundred thirty-nine".