461772421 has 12 divisors (see below), whose sum is σ = 508327596. Its totient is φ = 419165120.

The previous prime is 461772419. The next prime is 461772431. The reversal of 461772421 is 124277164.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 101304225 + 360468196 = 10065^2 + 18986^2 .

It is not a de Polignac number, because 461772421 - 2¹ = 461772419 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 (461772401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91065 + ... + 96001.

It is an arithmetic number, because the mean of its divisors is an integer number (42360633).

Almost surely, 2^461772421 is an apocalyptic number.

It is an amenable number.

461772421 is a deficient number, since it is larger than the sum of its proper divisors (46555175).

461772421 is a wasteful number, since it uses less digits than its factorization.

461772421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5732 (or 5721 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 461772421 is about 21488.8906414454. The cubic root of 461772421 is about 772.9344489476.

The spelling of 461772421 in words is "four hundred sixty-one million, seven hundred seventy-two thousand, four hundred twenty-one".