400612633 has 4 divisors (see below), whose sum is σ = 424178100. Its totient is φ = 377047168.

The previous prime is 400612607. The next prime is 400612657. The reversal of 400612633 is 336216004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 160579584 + 240033049 = 12672^2 + 15493^2 .

It is a cyclic number.

It is not a de Polignac number, because 400612633 - 2¹³ = 400604441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400612598 and 400612607.

It is not an unprimeable number, because it can be changed into a prime (400612133) 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, 11782708 + ... + 11782741.

It is an arithmetic number, because the mean of its divisors is an integer number (106044525).

Almost surely, 2^400612633 is an apocalyptic number.

It is an amenable number.

400612633 is a deficient number, since it is larger than the sum of its proper divisors (23565467).

400612633 is a wasteful number, since it uses less digits than its factorization.

400612633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23565466.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 400612633 is about 20015.3099651242. The cubic root of 400612633 is about 737.1822677295.

Adding to 400612633 its reverse (336216004), we get a palindrome (736828637).

The spelling of 400612633 in words is "four hundred million, six hundred twelve thousand, six hundred thirty-three".