401261397 has 8 divisors (see below), whose sum is σ = 535167456. Its totient is φ = 267431472.

The previous prime is 401261359. The next prime is 401261417. The reversal of 401261397 is 793162104.

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

It is a de Polignac number, because none of the positive numbers 2^k-401261397 is a prime.

It is a super-2 number, since 2×401261397² = 322021417444783218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401261327) 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, 5323 + ... + 28824.

It is an arithmetic number, because the mean of its divisors is an integer number (66895932).

Almost surely, 2^401261397 is an apocalyptic number.

It is an amenable number.

401261397 is a deficient number, since it is larger than the sum of its proper divisors (133906059).

401261397 is a wasteful number, since it uses less digits than its factorization.

401261397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38067.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 401261397 is about 20031.5101028355. The cubic root of 401261397 is about 737.5799914002.

The spelling of 401261397 in words is "four hundred one million, two hundred sixty-one thousand, three hundred ninety-seven".