40140401 has 4 divisors (see below), whose sum is σ = 45874752. Its totient is φ = 34406052.

The previous prime is 40140389. The next prime is 40140403. The reversal of 40140401 is 10404104.

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 40140401 - 2⁶ = 40140337 is a prime.

It is a super-2 number, since 2×40140401² = 3222503584881602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40140403) 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, 2867165 + ... + 2867178.

It is an arithmetic number, because the mean of its divisors is an integer number (11468688).

Almost surely, 2^40140401 is an apocalyptic number.

It is an amenable number.

40140401 is a deficient number, since it is larger than the sum of its proper divisors (5734351).

40140401 is an equidigital number, since it uses as much as digits as its factorization.

40140401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5734350.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 40140401 is about 6335.6452710044. The cubic root of 40140401 is about 342.3948593037.

Adding to 40140401 its reverse (10404104), we get a palindrome (50544505).

The spelling of 40140401 in words is "forty million, one hundred forty thousand, four hundred one".