401348687 has 2 divisors, whose sum is σ = 401348688. Its totient is φ = 401348686.

The previous prime is 401348681. The next prime is 401348737. The reversal of 401348687 is 786843104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401348687 is a prime.

It is a super-2 number, since 2×401348687² = 322161537113247938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401348681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200674343 + 200674344.

It is an arithmetic number, because the mean of its divisors is an integer number (200674344).

Almost surely, 2^401348687 is an apocalyptic number.

401348687 is a deficient number, since it is larger than the sum of its proper divisors (1).

401348687 is an equidigital number, since it uses as much as digits as its factorization.

401348687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 401348687 is about 20033.6888016161. The cubic root of 401348687 is about 737.6334716584.

The spelling of 401348687 in words is "four hundred one million, three hundred forty-eight thousand, six hundred eighty-seven".