401223761 has 4 divisors (see below), whose sum is σ = 403881024. Its totient is φ = 398566500.

The previous prime is 401223701. The next prime is 401223803. The reversal of 401223761 is 167322104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401223761 - 2¹⁰ = 401222737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401223761.

It is not an unprimeable number, because it can be changed into a prime (401223701) 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, 1328405 + ... + 1328706.

It is an arithmetic number, because the mean of its divisors is an integer number (100970256).

Almost surely, 2^401223761 is an apocalyptic number.

It is an amenable number.

401223761 is a deficient number, since it is larger than the sum of its proper divisors (2657263).

401223761 is a wasteful number, since it uses less digits than its factorization.

401223761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657262.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 401223761 is about 20030.5706608674. The cubic root of 401223761 is about 737.5569304324.

Adding to 401223761 its reverse (167322104), we get a palindrome (568545865).

The spelling of 401223761 in words is "four hundred one million, two hundred twenty-three thousand, seven hundred sixty-one".