40040430 has 16 divisors (see below), whose sum is σ = 96097104. Its totient is φ = 10677440.

The previous prime is 40040411. The next prime is 40040471. The reversal of 40040430 is 3404004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667311 + ... + 667370.

It is an arithmetic number, because the mean of its divisors is an integer number (6006069).

Almost surely, 2^40040430 is an apocalyptic number.

40040430 is an abundant number, since it is smaller than the sum of its proper divisors (56056674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40040430 is a wasteful number, since it uses less digits than its factorization.

40040430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334691.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 40040430 is about 6327.7507852317. The cubic root of 40040430 is about 342.1103744155.

Adding to 40040430 its reverse (3404004), we get a palindrome (43444434).

It can be divided in two parts, 40040 and 430, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 40040430 in words is "forty million, forty thousand, four hundred thirty".