40538401 has 2 divisors, whose sum is σ = 40538402. Its totient is φ = 40538400.

The previous prime is 40538371. The next prime is 40538423. The reversal of 40538401 is 10483504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39050001 + 1488400 = 6249^2 + 1220^2 .

It is a cyclic number.

It is not a de Polignac number, because 40538401 - 2¹⁷ = 40407329 is a prime.

It is not a weakly prime, because it can be changed into another prime (40538441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20269200 + 20269201.

It is an arithmetic number, because the mean of its divisors is an integer number (20269201).

Almost surely, 2^40538401 is an apocalyptic number.

It is an amenable number.

40538401 is a deficient number, since it is larger than the sum of its proper divisors (1).

40538401 is an equidigital number, since it uses as much as digits as its factorization.

40538401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 40538401 is about 6366.9773833429. The cubic root of 40538401 is about 343.5227771750.

The spelling of 40538401 in words is "forty million, five hundred thirty-eight thousand, four hundred one".