363999481 has 2 divisors, whose sum is σ = 363999482. Its totient is φ = 363999480.

The previous prime is 363999469. The next prime is 363999499. The reversal of 363999481 is 184999363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305935081 + 58064400 = 17491^2 + 7620^2 .

It is an emirp because it is prime and its reverse (184999363) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 363999481 - 2¹¹ = 363997433 is a prime.

It is a super-2 number, since 2×363999481² = 264991244336538722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (363999431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181999740 + 181999741.

It is an arithmetic number, because the mean of its divisors is an integer number (181999741).

Almost surely, 2^363999481 is an apocalyptic number.

It is an amenable number.

363999481 is a deficient number, since it is larger than the sum of its proper divisors (1).

363999481 is an equidigital number, since it uses as much as digits as its factorization.

363999481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 52.

The square root of 363999481 is about 19078.7704268383. The cubic root of 363999481 is about 714.0033588441.

The spelling of 363999481 in words is "three hundred sixty-three million, nine hundred ninety-nine thousand, four hundred eighty-one".