40290401 has 4 divisors (see below), whose sum is σ = 40580400. Its totient is φ = 40000404.

The previous prime is 40290377. The next prime is 40290409. The reversal of 40290401 is 10409204.

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 40290401 - 2⁶ = 40290337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40290409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144791 + ... + 145068.

It is an arithmetic number, because the mean of its divisors is an integer number (10145100).

Almost surely, 2^40290401 is an apocalyptic number.

It is an amenable number.

40290401 is a deficient number, since it is larger than the sum of its proper divisors (289999).

40290401 is a wasteful number, since it uses less digits than its factorization.

40290401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289998.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 40290401 is about 6347.4720164803. The cubic root of 40290401 is about 342.8208257085.

Adding to 40290401 its reverse (10409204), we get a palindrome (50699605).

The spelling of 40290401 in words is "forty million, two hundred ninety thousand, four hundred one".