401086957 has 4 divisors (see below), whose sum is σ = 401163516. Its totient is φ = 401010400.

The previous prime is 401086943. The next prime is 401086963. The reversal of 401086957 is 759680104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 225630441 + 175456516 = 15021^2 + 13246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401086957 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401086927) 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 3 ways as a sum of consecutive naturals, for example, 29794 + ... + 41107.

It is an arithmetic number, because the mean of its divisors is an integer number (100290879).

Almost surely, 2^401086957 is an apocalyptic number.

It is an amenable number.

401086957 is a deficient number, since it is larger than the sum of its proper divisors (76559).

401086957 is an equidigital number, since it uses as much as digits as its factorization.

401086957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76558.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 401086957 is about 20027.1554894848. The cubic root of 401086957 is about 737.4730934165.

The spelling of 401086957 in words is "four hundred one million, eighty-six thousand, nine hundred fifty-seven".