246423880921 has 9 divisors (see below), whose sum is σ = 247126311999. Its totient is φ = 245723445000.

The previous prime is 246423880909. The next prime is 246423880931. The reversal of 246423880921 is 129088324642.

The square root of 246423880921 is 496411.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 195663790921 + 50760090000 = 442339^2 + 225300^2 .

It is not a de Polignac number, because 246423880921 - 2¹⁹ = 246423356633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (246423880931) 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 8 ways as a sum of consecutive naturals, for example, 328127296 + ... + 328128046.

It is an arithmetic number, because the mean of its divisors is an integer number (27458479111).

Almost surely, 2^246423880921 is an apocalyptic number.

246423880921 is the 496411-st square number.

246423880921 is the 248206-th centered octagonal number.

It is an amenable number.

246423880921 is a deficient number, since it is larger than the sum of its proper divisors (702431078).

246423880921 is an frugal number, since it uses more digits than its factorization.

246423880921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 49.

Multiplying 246423880921 by its sum of digits (49), we get a square (12074770165129 = 3474877²).

The spelling of 246423880921 in words is "two hundred forty-six billion, four hundred twenty-three million, eight hundred eighty thousand, nine hundred twenty-one".