461987629 has 4 divisors (see below), whose sum is σ = 462039676. Its totient is φ = 461935584.

The previous prime is 461987627. The next prime is 461987633. The reversal of 461987629 is 926789164.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 153809604 + 308178025 = 12402^2 + 17555^2 .

It is a cyclic number.

It is not a de Polignac number, because 461987629 - 2¹ = 461987627 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461987627) 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 3 ways as a sum of consecutive naturals, for example, 8994 + ... + 31699.

It is an arithmetic number, because the mean of its divisors is an integer number (115509919).

Almost surely, 2^461987629 is an apocalyptic number.

It is an amenable number.

461987629 is a deficient number, since it is larger than the sum of its proper divisors (52047).

461987629 is a wasteful number, since it uses less digits than its factorization.

461987629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52046.

The product of its digits is 1306368, while the sum is 52.

The square root of 461987629 is about 21493.8974827740. The cubic root of 461987629 is about 773.0545050871.

The spelling of 461987629 in words is "four hundred sixty-one million, nine hundred eighty-seven thousand, six hundred twenty-nine".