406156406 has 4 divisors (see below), whose sum is σ = 609234612. Its totient is φ = 203078202.

The previous prime is 406156381. The next prime is 406156427. The reversal of 406156406 is 604651604.

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

It is a super-2 number, since 2×406156406² = 329926052269673672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101539100 + ... + 101539103.

It is an arithmetic number, because the mean of its divisors is an integer number (152308653).

Almost surely, 2^406156406 is an apocalyptic number.

406156406 is a deficient number, since it is larger than the sum of its proper divisors (203078206).

406156406 is a wasteful number, since it uses less digits than its factorization.

406156406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203078205.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 406156406 is about 20153.3224556151. The cubic root of 406156406 is about 740.5671364551.

The spelling of 406156406 in words is "four hundred six million, one hundred fifty-six thousand, four hundred six".