461491477 has 4 divisors (see below), whose sum is σ = 461627980. Its totient is φ = 461354976.

The previous prime is 461491463. The next prime is 461491493. The reversal of 461491477 is 774194164.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9036036 + 452455441 = 3006^2 + 21271^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-461491477 is a prime.

It is a super-3 number, since 3×461491477³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461491447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63048 + ... + 69985.

It is an arithmetic number, because the mean of its divisors is an integer number (115406995).

Almost surely, 2^461491477 is an apocalyptic number.

It is an amenable number.

461491477 is a deficient number, since it is larger than the sum of its proper divisors (136503).

461491477 is a wasteful number, since it uses less digits than its factorization.

461491477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136502.

The product of its digits is 169344, while the sum is 43.

The square root of 461491477 is about 21482.3526877295. The cubic root of 461491477 is about 772.7776651155. Note that the first 3 decimals are identical.

The spelling of 461491477 in words is "four hundred sixty-one million, four hundred ninety-one thousand, four hundred seventy-seven".