461721437 has 4 divisors (see below), whose sum is σ = 462927360. Its totient is φ = 460515516.

The previous prime is 461721431. The next prime is 461721511. The reversal of 461721437 is 734127164.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 461721437 - 2¹⁴ = 461705053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 461721397 and 461721406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461721431) 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, 602387 + ... + 603152.

It is an arithmetic number, because the mean of its divisors is an integer number (115731840).

Almost surely, 2^461721437 is an apocalyptic number.

It is an amenable number.

461721437 is a deficient number, since it is larger than the sum of its proper divisors (1205923).

461721437 is a wasteful number, since it uses less digits than its factorization.

461721437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205922.

The product of its digits is 28224, while the sum is 35.

The square root of 461721437 is about 21487.7043213090. The cubic root of 461721437 is about 772.9060015000.

The spelling of 461721437 in words is "four hundred sixty-one million, seven hundred twenty-one thousand, four hundred thirty-seven".