481649993 has 4 divisors (see below), whose sum is σ = 525436368. Its totient is φ = 437863620.

The previous prime is 481649977. The next prime is 481649999. The reversal of 481649993 is 399946184.

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 481649993 - 2⁴ = 481649977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481649999) 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, 21893171 + ... + 21893192.

It is an arithmetic number, because the mean of its divisors is an integer number (131359092).

Almost surely, 2^481649993 is an apocalyptic number.

It is an amenable number.

481649993 is a deficient number, since it is larger than the sum of its proper divisors (43786375).

481649993 is a wasteful number, since it uses less digits than its factorization.

481649993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43786374.

The product of its digits is 1679616, while the sum is 53.

The square root of 481649993 is about 21946.5257614958. The cubic root of 481649993 is about 783.8696555702.

The spelling of 481649993 in words is "four hundred eighty-one million, six hundred forty-nine thousand, nine hundred ninety-three".