400403485 has 8 divisors (see below), whose sum is σ = 482924376. Its totient is φ = 318696000.

The previous prime is 400403477. The next prime is 400403503. The reversal of 400403485 is 584304004.

It can be written as a sum of positive squares in 4 ways, for example, as 220789881 + 179613604 = 14859^2 + 13402^2 .

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

It is not a de Polignac number, because 400403485 - 2³ = 400403477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202266 + ... + 204235.

It is an arithmetic number, because the mean of its divisors is an integer number (60365547).

Almost surely, 2^400403485 is an apocalyptic number.

It is an amenable number.

400403485 is a deficient number, since it is larger than the sum of its proper divisors (82520891).

400403485 is a wasteful number, since it uses less digits than its factorization.

400403485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406703.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 400403485 is about 20010.0845825299. The cubic root of 400403485 is about 737.0539583828.

Adding to 400403485 its reverse (584304004), we get a palindrome (984707489).

The spelling of 400403485 in words is "four hundred million, four hundred three thousand, four hundred eighty-five".