401540519 has 2 divisors, whose sum is σ = 401540520. Its totient is φ = 401540518.

The previous prime is 401540483. The next prime is 401540533. The reversal of 401540519 is 915045104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401540519 - 2⁸ = 401540263 is a prime.

It is a super-2 number, since 2×401540519² = 322469576797578722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 401540491 and 401540500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401548519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200770259 + 200770260.

It is an arithmetic number, because the mean of its divisors is an integer number (200770260).

Almost surely, 2^401540519 is an apocalyptic number.

401540519 is a deficient number, since it is larger than the sum of its proper divisors (1).

401540519 is an equidigital number, since it uses as much as digits as its factorization.

401540519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 401540519 is about 20038.4759650029. The cubic root of 401540519 is about 737.7509747758.

The spelling of 401540519 in words is "four hundred one million, five hundred forty thousand, five hundred nineteen".