400106677 has 4 divisors (see below), whose sum is σ = 413013376. Its totient is φ = 387199980.

The previous prime is 400106669. The next prime is 400106687. The reversal of 400106677 is 776601004.

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 400106677 - 2³ = 400106669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 12906667 = 400106677 / (4 + 0 + 0 + 1 + 0 + 6 + 6 + 7 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400106687) 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, 6453303 + ... + 6453364.

It is an arithmetic number, because the mean of its divisors is an integer number (103253344).

Almost surely, 2^400106677 is an apocalyptic number.

It is an amenable number.

400106677 is a deficient number, since it is larger than the sum of its proper divisors (12906699).

400106677 is a wasteful number, since it uses less digits than its factorization.

400106677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12906698.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 400106677 is about 20002.6667472115. Note that the first 3 decimals coincide. The cubic root of 400106677 is about 736.8717941442.

The spelling of 400106677 in words is "four hundred million, one hundred six thousand, six hundred seventy-seven".