400416231 has 4 divisors (see below), whose sum is σ = 533888312. Its totient is φ = 266944152.

The previous prime is 400416229. The next prime is 400416239. The reversal of 400416231 is 132614004.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 400416231 - 2¹ = 400416229 is a prime.

It is a super-2 number, since 2×400416231² = 320666316096490722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400416198 and 400416207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400416239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66736036 + ... + 66736041.

It is an arithmetic number, because the mean of its divisors is an integer number (133472078).

Almost surely, 2^400416231 is an apocalyptic number.

400416231 is a deficient number, since it is larger than the sum of its proper divisors (133472081).

400416231 is a wasteful number, since it uses less digits than its factorization.

400416231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133472080.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 400416231 is about 20010.4030694037. The cubic root of 400416231 is about 737.0617791523.

The spelling of 400416231 in words is "four hundred million, four hundred sixteen thousand, two hundred thirty-one".