40238901 has 6 divisors (see below), whose sum is σ = 58122870. Its totient is φ = 26825928.

The previous prime is 40238897. The next prime is 40238911. The reversal of 40238901 is 10983204.

It can be written as a sum of positive squares in only one way, i.e., 31979025 + 8259876 = 5655^2 + 2874^2 .

It is not a de Polignac number, because 40238901 - 2² = 40238897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40238911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2235486 + ... + 2235503.

It is an arithmetic number, because the mean of its divisors is an integer number (9687145).

Almost surely, 2^40238901 is an apocalyptic number.

It is an amenable number.

40238901 is a deficient number, since it is larger than the sum of its proper divisors (17883969).

40238901 is a wasteful number, since it uses less digits than its factorization.

40238901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4470995 (or 4470992 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 40238901 is about 6343.4139861750. The cubic root of 40238901 is about 342.6746966068.

The spelling of 40238901 in words is "forty million, two hundred thirty-eight thousand, nine hundred one".