400941869 has 4 divisors (see below), whose sum is σ = 406926144. Its totient is φ = 394957596.

The previous prime is 400941851. The next prime is 400941887. The reversal of 400941869 is 968149004.

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 an interprime number because it is at equal distance from previous prime (400941851) and next prime (400941887).

It is a cyclic number.

It is not a de Polignac number, because 400941869 - 2²⁰ = 399893293 is a prime.

It is a super-2 number, since 2×400941869² = 321508764634426322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400941809) 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, 2992037 + ... + 2992170.

It is an arithmetic number, because the mean of its divisors is an integer number (101731536).

Almost surely, 2^400941869 is an apocalyptic number.

It is an amenable number.

400941869 is a deficient number, since it is larger than the sum of its proper divisors (5984275).

400941869 is an equidigital number, since it uses as much as digits as its factorization.

400941869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5984274.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 400941869 is about 20023.5328800889. The cubic root of 400941869 is about 737.3841589193.

The spelling of 400941869 in words is "four hundred million, nine hundred forty-one thousand, eight hundred sixty-nine".