40403481 has 12 divisors (see below), whose sum is σ = 56857392. Its totient is φ = 25517304.

The previous prime is 40403471. The next prime is 40403483. The reversal of 40403481 is 18430404.

40403481 = T₂₈₁ + T₂₈₂ + ... + T₆₄₁.

It is not a de Polignac number, because 40403481 - 2⁵ = 40403449 is a prime.

It is a super-2 number, since 2×40403481² = 3264882553834722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40403483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17571 + ... + 19736.

It is an arithmetic number, because the mean of its divisors is an integer number (4738116).

Almost surely, 2^40403481 is an apocalyptic number.

It is an amenable number.

40403481 is a deficient number, since it is larger than the sum of its proper divisors (16453911).

40403481 is a wasteful number, since it uses less digits than its factorization.

40403481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37348 (or 37329 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 40403481 is about 6356.3732583919. The cubic root of 40403481 is about 343.1412491600.

Adding to 40403481 its reverse (18430404), we get a palindrome (58833885).

The spelling of 40403481 in words is "forty million, four hundred three thousand, four hundred eighty-one".