40558401 has 48 divisors (see below), whose sum is σ = 67389504. Its totient is φ = 24214464.

The previous prime is 40558387. The next prime is 40558403. The reversal of 40558401 is 10485504.

It is not a de Polignac number, because 40558401 - 2¹⁵ = 40525633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40558403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116710 + ... + 117056.

It is an arithmetic number, because the mean of its divisors is an integer number (1403948).

Almost surely, 2^40558401 is an apocalyptic number.

It is an amenable number.

40558401 is a deficient number, since it is larger than the sum of its proper divisors (26831103).

40558401 is a wasteful number, since it uses less digits than its factorization.

40558401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 40558401 is about 6368.5477936497. The cubic root of 40558401 is about 343.5792612807.

The spelling of 40558401 in words is "forty million, five hundred fifty-eight thousand, four hundred one".