401310649 has 4 divisors (see below), whose sum is σ = 401358964. Its totient is φ = 401262336.

The previous prime is 401310629. The next prime is 401310659. The reversal of 401310649 is 946013104.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 156075049 + 245235600 = 12493^2 + 15660^2 .

It is a cyclic number.

It is not a de Polignac number, because 401310649 - 2⁹ = 401310137 is a prime.

It is a super-2 number, since 2×401310649² = 322100474001602402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401310629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8172 + ... + 29485.

It is an arithmetic number, because the mean of its divisors is an integer number (100339741).

Almost surely, 2^401310649 is an apocalyptic number.

It is an amenable number.

401310649 is a deficient number, since it is larger than the sum of its proper divisors (48315).

401310649 is a wasteful number, since it uses less digits than its factorization.

401310649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48314.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 401310649 is about 20032.7394282460. The cubic root of 401310649 is about 737.6101677423.

The spelling of 401310649 in words is "four hundred one million, three hundred ten thousand, six hundred forty-nine".