40403907 has 16 divisors (see below), whose sum is σ = 60334080. Its totient is φ = 26721576.

The previous prime is 40403897. The next prime is 40403927. The reversal of 40403907 is 70930404.

It is not a de Polignac number, because 40403907 - 2¹¹ = 40401859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40403927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2463 + ... + 9320.

It is an arithmetic number, because the mean of its divisors is an integer number (3770880).

Almost surely, 2^40403907 is an apocalyptic number.

40403907 is a deficient number, since it is larger than the sum of its proper divisors (19930173).

40403907 is a wasteful number, since it uses less digits than its factorization.

40403907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11919 (or 11913 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 40403907 is about 6356.4067679783. The cubic root of 40403907 is about 343.1424551424.

The spelling of 40403907 in words is "forty million, four hundred three thousand, nine hundred seven".