400814879 has 2 divisors, whose sum is σ = 400814880. Its totient is φ = 400814878.

The previous prime is 400814867. The next prime is 400814891. The reversal of 400814879 is 978418004.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (400814867) and next prime (400814891).

It is a cyclic number.

It is not a de Polignac number, because 400814879 - 2¹⁶ = 400749343 is a prime.

It is a super-3 number, since 3×400814879³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400814839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200407439 + 200407440.

It is an arithmetic number, because the mean of its divisors is an integer number (200407440).

Almost surely, 2^400814879 is an apocalyptic number.

400814879 is a deficient number, since it is larger than the sum of its proper divisors (1).

400814879 is an equidigital number, since it uses as much as digits as its factorization.

400814879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 400814879 is about 20020.3616101208. The cubic root of 400814879 is about 737.3063003322.

The spelling of 400814879 in words is "four hundred million, eight hundred fourteen thousand, eight hundred seventy-nine".