21963483 has 6 divisors (see below), whose sum is σ = 31725044. Its totient is φ = 14642316.

The previous prime is 21963481. The next prime is 21963499. The reversal of 21963483 is 38436912.

21963483 is a `hidden beast` number, since 2 + 19 + 634 + 8 + 3 = 666.

It is not a de Polignac number, because 21963483 - 2¹ = 21963481 is a prime.

It is a super-4 number, since 4×21963483⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21963481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1220185 + ... + 1220202.

Almost surely, 2^21963483 is an apocalyptic number.

21963483 is a deficient number, since it is larger than the sum of its proper divisors (9761561).

21963483 is a wasteful number, since it uses less digits than its factorization.

21963483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440393 (or 2440390 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 21963483 is about 4686.5214178535. The cubic root of 21963483 is about 280.0488137685.

The spelling of 21963483 in words is "twenty-one million, nine hundred sixty-three thousand, four hundred eighty-three".