401345965 has 8 divisors (see below), whose sum is σ = 481741848. Its totient is φ = 320992320.

The previous prime is 401345963. The next prime is 401345977. The reversal of 401345965 is 569543104.

It can be written as a sum of positive squares in 4 ways, for example, as 47416996 + 353928969 = 6886^2 + 18813^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 401345965 - 2¹ = 401345963 is a prime.

It is a super-2 number, since 2×401345965² = 322157167243562450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401345963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16795 + ... + 32935.

It is an arithmetic number, because the mean of its divisors is an integer number (60217731).

Almost surely, 2^401345965 is an apocalyptic number.

It is an amenable number.

401345965 is a deficient number, since it is larger than the sum of its proper divisors (80395883).

401345965 is a wasteful number, since it uses less digits than its factorization.

401345965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21119.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 401345965 is about 20033.6208659343. The cubic root of 401345965 is about 737.6318040787.

The spelling of 401345965 in words is "four hundred one million, three hundred forty-five thousand, nine hundred sixty-five".