40139403 has 16 divisors (see below), whose sum is σ = 54630432. Its totient is φ = 26208000.

The previous prime is 40139371. The next prime is 40139417. The reversal of 40139403 is 30493104.

40139403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40139403 - 2⁵ = 40139371 is a prime.

It is a super-2 number, since 2×40139403² = 3222343346392818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40139423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76783 + ... + 77303.

It is an arithmetic number, because the mean of its divisors is an integer number (3414402).

Almost surely, 2^40139403 is an apocalyptic number.

40139403 is a deficient number, since it is larger than the sum of its proper divisors (14491029).

40139403 is a wasteful number, since it uses less digits than its factorization.

40139403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 40139403 is about 6335.5665097922. The cubic root of 40139403 is about 342.3920216564.

The spelling of 40139403 in words is "forty million, one hundred thirty-nine thousand, four hundred three".