400432245 has 32 divisors (see below), whose sum is σ = 656474112. Its totient is φ = 208333632.

The previous prime is 400432237. The next prime is 400432283. The reversal of 400432245 is 542234004.

It is not a de Polignac number, because 400432245 - 2³ = 400432237 is a prime.

It is a super-3 number, since 3×400432245³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 269274 + ... + 270756.

It is an arithmetic number, because the mean of its divisors is an integer number (20514816).

Almost surely, 2^400432245 is an apocalyptic number.

It is an amenable number.

400432245 is a deficient number, since it is larger than the sum of its proper divisors (256041867).

400432245 is a wasteful number, since it uses less digits than its factorization.

400432245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 400432245 is about 20010.8032072678. The cubic root of 400432245 is about 737.0716048862.

Adding to 400432245 its reverse (542234004), we get a palindrome (942666249).

The spelling of 400432245 in words is "four hundred million, four hundred thirty-two thousand, two hundred forty-five".