400100623 has 8 divisors (see below), whose sum is σ = 433733216. Its totient is φ = 366876000.

The previous prime is 400100609. The next prime is 400100639. The reversal of 400100623 is 326001004.

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

It is a cyclic number.

It is not a de Polignac number, because 400100623 - 2¹³ = 400092431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400100597 and 400100606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400100683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99948 + ... + 103873.

It is an arithmetic number, because the mean of its divisors is an integer number (54216652).

Almost surely, 2^400100623 is an apocalyptic number.

400100623 is a deficient number, since it is larger than the sum of its proper divisors (33632593).

400100623 is a wasteful number, since it uses less digits than its factorization.

400100623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203985.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 400100623 is about 20002.5154168170. The cubic root of 400100623 is about 736.8680775984.

Adding to 400100623 its reverse (326001004), we get a palindrome (726101627).

The spelling of 400100623 in words is "four hundred million, one hundred thousand, six hundred twenty-three".