401744261 has 8 divisors (see below), whose sum is σ = 418763040. Its totient is φ = 385049808.

The previous prime is 401744249. The next prime is 401744263. The reversal of 401744261 is 162447104.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401744261 is a prime.

It is a super-2 number, since 2×401744261² = 322796902492872242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401744263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78551 + ... + 83508.

It is an arithmetic number, because the mean of its divisors is an integer number (52345380).

Almost surely, 2^401744261 is an apocalyptic number.

It is an amenable number.

401744261 is a deficient number, since it is larger than the sum of its proper divisors (17018779).

401744261 is a wasteful number, since it uses less digits than its factorization.

401744261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162163.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 401744261 is about 20043.5590901417. The cubic root of 401744261 is about 737.8757321677.

The spelling of 401744261 in words is "four hundred one million, seven hundred forty-four thousand, two hundred sixty-one".