400069106 has 4 divisors (see below), whose sum is σ = 600103662. Its totient is φ = 200034552.

The previous prime is 400069099. The next prime is 400069133. The reversal of 400069106 is 601960004.

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., 399640081 + 429025 = 19991^2 + 655^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100017275 + ... + 100017278.

Almost surely, 2^400069106 is an apocalyptic number.

400069106 is a deficient number, since it is larger than the sum of its proper divisors (200034556).

400069106 is a wasteful number, since it uses less digits than its factorization.

400069106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200034555.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 400069106 is about 20001.7275753871. The cubic root of 400069106 is about 736.8487287315.

The spelling of 400069106 in words is "four hundred million, sixty-nine thousand, one hundred six".