40156406 has 8 divisors (see below), whose sum is σ = 60399840. Its totient is φ = 20023128.

The previous prime is 40156399. The next prime is 40156427. The reversal of 40156406 is 60465104.

It is a happy number.

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

It is a super-2 number, since 2×40156406² = 3225073885673672, 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 in 3 ways as a sum of consecutive naturals, for example, 26621 + ... + 28088.

It is an arithmetic number, because the mean of its divisors is an integer number (7549980).

Almost surely, 2^40156406 is an apocalyptic number.

40156406 is a deficient number, since it is larger than the sum of its proper divisors (20243434).

40156406 is a wasteful number, since it uses less digits than its factorization.

40156406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55078.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40156406 is about 6336.9082366719. The cubic root of 40156406 is about 342.4403604398.

The spelling of 40156406 in words is "forty million, one hundred fifty-six thousand, four hundred six".