400695503 has 16 divisors (see below), whose sum is σ = 455280000. Its totient is φ = 349596000.

The previous prime is 400695499. The next prime is 400695509. The reversal of 400695503 is 305596004.

It is a happy number.

It is not a de Polignac number, because 400695503 - 2² = 400695499 is a prime.

It is a super-2 number, since 2×400695503² = 321113772248846018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400695503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400695509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121628 + ... + 124878.

It is an arithmetic number, because the mean of its divisors is an integer number (28455000).

Almost surely, 2^400695503 is an apocalyptic number.

400695503 is a deficient number, since it is larger than the sum of its proper divisors (54584497).

400695503 is a wasteful number, since it uses less digits than its factorization.

400695503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3782.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 400695503 is about 20017.3800233697. The cubic root of 400695503 is about 737.2330949523.

The spelling of 400695503 in words is "four hundred million, six hundred ninety-five thousand, five hundred three".