470138781 has 32 divisors (see below), whose sum is σ = 735769600. Its totient is φ = 266907312.

The previous prime is 470138771. The next prime is 470138789. The reversal of 470138781 is 187831074.

It is not a de Polignac number, because 470138781 - 2¹³ = 470130589 is a prime.

It is a super-2 number, since 2×470138781² = 442060946800331922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (470138789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166326 + ... + 169128.

It is an arithmetic number, because the mean of its divisors is an integer number (22992800).

Almost surely, 2^470138781 is an apocalyptic number.

It is an amenable number.

470138781 is a deficient number, since it is larger than the sum of its proper divisors (265630819).

470138781 is a wasteful number, since it uses less digits than its factorization.

470138781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990 (or 2976 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 470138781 is about 21682.6838975252. The cubic root of 470138781 is about 777.5745284099.

The spelling of 470138781 in words is "four hundred seventy million, one hundred thirty-eight thousand, seven hundred eighty-one".