401540383 has 2 divisors, whose sum is σ = 401540384. Its totient is φ = 401540382.

The previous prime is 401540329. The next prime is 401540389. The reversal of 401540383 is 383045104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401540383 is a prime.

It is a super-2 number, since 2×401540383² = 322469358359573378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401540389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200770191 + 200770192.

It is an arithmetic number, because the mean of its divisors is an integer number (200770192).

Almost surely, 2^401540383 is an apocalyptic number.

401540383 is a deficient number, since it is larger than the sum of its proper divisors (1).

401540383 is an equidigital number, since it uses as much as digits as its factorization.

401540383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 401540383 is about 20038.4725715310. The cubic root of 401540383 is about 737.7508914848.

Adding to 401540383 its reverse (383045104), we get a palindrome (784585487).

The spelling of 401540383 in words is "four hundred one million, five hundred forty thousand, three hundred eighty-three".