400540435 has 8 divisors (see below), whose sum is σ = 480828816. Its totient is φ = 320312160.

The previous prime is 400540433. The next prime is 400540477. The reversal of 400540435 is 534045004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400540435 - 2¹ = 400540433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400540433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1240 + ... + 28330.

It is an arithmetic number, because the mean of its divisors is an integer number (60103602).

Almost surely, 2^400540435 is an apocalyptic number.

400540435 is a deficient number, since it is larger than the sum of its proper divisors (80288381).

400540435 is a wasteful number, since it uses less digits than its factorization.

400540435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30053.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 400540435 is about 20013.5063144867. The cubic root of 400540435 is about 737.1379803236.

Adding to 400540435 its reverse (534045004), we get a palindrome (934585439).

It can be divided in two parts, 4005404 and 35, that multiplied together give a triangular number (140189140 = T₁₆₇₄₄).

The spelling of 400540435 in words is "four hundred million, five hundred forty thousand, four hundred thirty-five".