400500026 has 4 divisors (see below), whose sum is σ = 600750042. Its totient is φ = 200250012.

The previous prime is 400500011. The next prime is 400500029. The reversal of 400500026 is 620005004.

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

It can be written as a sum of positive squares in only one way, i.e., 352876225 + 47623801 = 18785^2 + 6901^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400499977 and 400500013.

It is not an unprimeable number, because it can be changed into a prime (400500029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100125005 + ... + 100125008.

Almost surely, 2^400500026 is an apocalyptic number.

400500026 is a deficient number, since it is larger than the sum of its proper divisors (200250016).

400500026 is a wasteful number, since it uses less digits than its factorization.

400500026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200250015.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 400500026 is about 20012.4967457836. The cubic root of 400500026 is about 737.1131904748.

The spelling of 400500026 in words is "four hundred million, five hundred thousand, twenty-six".