39803481 has 15 divisors (see below), whose sum is σ = 59544463. Its totient is φ = 26497800.

The previous prime is 39803479. The next prime is 39803503. The reversal of 39803481 is 18430893.

The square root of 39803481 is 6309.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 34327881 + 5475600 = 5859^2 + 2340^2 .

It is not a de Polignac number, because 39803481 - 2¹ = 39803479 is a prime.

It is a super-2 number, since 2×39803481² = 3168634199434722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39803431) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 56431 + ... + 57131.

Almost surely, 2^39803481 is an apocalyptic number.

39803481 is the 6309-th square number.

39803481 is the 3155-th centered octagonal number.

It is an amenable number.

39803481 is a deficient number, since it is larger than the sum of its proper divisors (19740982).

39803481 is an frugal number, since it uses more digits than its factorization.

39803481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The cubic root of 39803481 is about 341.4341983465.

Multiplying 39803481 by its sum of digits (36), we get a square (1432925316 = 37854²).

Multiplying 39803481 by its product of nonzero digits (20736), we get a square (825364982016 = 908496²).

The spelling of 39803481 in words is "thirty-nine million, eight hundred three thousand, four hundred eighty-one".