400812629 has 16 divisors (see below), whose sum is σ = 461755776. Its totient is φ = 340804800.

The previous prime is 400812593. The next prime is 400812631. The reversal of 400812629 is 926218004.

It is not a de Polignac number, because 400812629 - 2²⁴ = 384035413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400812595 and 400812604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400815629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 816074 + ... + 816564.

It is an arithmetic number, because the mean of its divisors is an integer number (28859736).

Almost surely, 2^400812629 is an apocalyptic number.

It is an amenable number.

400812629 is a deficient number, since it is larger than the sum of its proper divisors (60943147).

400812629 is a wasteful number, since it uses less digits than its factorization.

400812629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 400812629 is about 20020.3054172508. The cubic root of 400812629 is about 737.3049206909.

The spelling of 400812629 in words is "four hundred million, eight hundred twelve thousand, six hundred twenty-nine".