396483981 has 16 divisors (see below), whose sum is σ = 544141248. Its totient is φ = 256636800.

The previous prime is 396483961. The next prime is 396483991. The reversal of 396483981 is 189384693.

It is not a de Polignac number, because 396483981 - 2⁵ = 396483949 is a prime.

It is a super-2 number, since 2×396483981² = 314399094379216722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396483931) 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 15 ways as a sum of consecutive naturals, for example, 18315 + ... + 33591.

It is an arithmetic number, because the mean of its divisors is an integer number (34008828).

Almost surely, 2^396483981 is an apocalyptic number.

It is an amenable number.

396483981 is a deficient number, since it is larger than the sum of its proper divisors (147657267).

396483981 is a wasteful number, since it uses less digits than its factorization.

396483981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15532.

The product of its digits is 1119744, while the sum is 51.

The square root of 396483981 is about 19911.9055090165. The cubic root of 396483981 is about 734.6410890552.

The spelling of 396483981 in words is "three hundred ninety-six million, four hundred eighty-three thousand, nine hundred eighty-one".