40056401 has 8 divisors (see below), whose sum is σ = 49940544. Its totient is φ = 31212720.

The previous prime is 40056383. The next prime is 40056421. The reversal of 40056401 is 10465004.

It is a happy number.

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

It is not a de Polignac number, because 40056401 - 2¹⁴ = 40040017 is a prime.

It is a super-2 number, since 2×40056401² = 3209030522145602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40056421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260030 + ... + 260183.

It is an arithmetic number, because the mean of its divisors is an integer number (6242568).

Almost surely, 2^40056401 is an apocalyptic number.

It is an amenable number.

40056401 is a deficient number, since it is larger than the sum of its proper divisors (9884143).

40056401 is a wasteful number, since it uses less digits than its factorization.

40056401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520231.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 40056401 is about 6329.0126402149. The cubic root of 40056401 is about 342.1558544340.

The spelling of 40056401 in words is "forty million, fifty-six thousand, four hundred one".