400620341 has 4 divisors (see below), whose sum is σ = 437040384. Its totient is φ = 364200300.

The previous prime is 400620313. The next prime is 400620343. The reversal of 400620341 is 143026004.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400620341 - 2¹⁸ = 400358197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400620343) 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, 18210005 + ... + 18210026.

It is an arithmetic number, because the mean of its divisors is an integer number (109260096).

Almost surely, 2^400620341 is an apocalyptic number.

It is an amenable number.

400620341 is a deficient number, since it is larger than the sum of its proper divisors (36420043).

400620341 is a wasteful number, since it uses less digits than its factorization.

400620341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36420042.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 400620341 is about 20015.5025167993. The cubic root of 400620341 is about 737.1869956254.

Adding to 400620341 its reverse (143026004), we get a palindrome (543646345).

The spelling of 400620341 in words is "four hundred million, six hundred twenty thousand, three hundred forty-one".