401508487 has 2 divisors, whose sum is σ = 401508488. Its totient is φ = 401508486.

The previous prime is 401508473. The next prime is 401508491. The reversal of 401508487 is 784805104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401508487 - 2²⁷ = 267290759 is a prime.

It is a super-2 number, since 2×401508487² = 322418130266058338, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401508427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200754243 + 200754244.

It is an arithmetic number, because the mean of its divisors is an integer number (200754244).

Almost surely, 2^401508487 is an apocalyptic number.

401508487 is a deficient number, since it is larger than the sum of its proper divisors (1).

401508487 is an equidigital number, since it uses as much as digits as its factorization.

401508487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 401508487 is about 20037.6766866820. The cubic root of 401508487 is about 737.7313567742.

The spelling of 401508487 in words is "four hundred one million, five hundred eight thousand, four hundred eighty-seven".