381459961 has 3 divisors (see below), whose sum is σ = 381479493. Its totient is φ = 381440430.

The previous prime is 381459959. The next prime is 381459971. The reversal of 381459961 is 169954183.

The square root of 381459961 is 19531.

It is a perfect power (a square), and thus also a powerful 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 is not a de Polignac number, because 381459961 - 2¹ = 381459959 is a prime.

It is a super-3 number, since 3×381459961³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381459971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9766 + ... + 29296.

It is an arithmetic number, because the mean of its divisors is an integer number (127159831).

Almost surely, 2^381459961 is an apocalyptic number.

381459961 is the 19531-st square number.

381459961 is the 9766-th centered octagonal number.

It is an amenable number.

381459961 is a deficient number, since it is larger than the sum of its proper divisors (19532).

381459961 is an frugal number, since it uses more digits than its factorization.

381459961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39062 (or 19531 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The cubic root of 381459961 is about 725.2420664537.

The spelling of 381459961 in words is "three hundred eighty-one million, four hundred fifty-nine thousand, nine hundred sixty-one".