396129055 has 16 divisors (see below), whose sum is σ = 546730560. Its totient is φ = 269897472.

The previous prime is 396129031. The next prime is 396129137. The reversal of 396129055 is 550921693.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 396129055 - 2⁷ = 396128927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 396128999 and 396129017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30550 + ... + 41539.

It is an arithmetic number, because the mean of its divisors is an integer number (34170660).

Almost surely, 2^396129055 is an apocalyptic number.

396129055 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

396129055 is a deficient number, since it is larger than the sum of its proper divisors (150601505).

396129055 is a wasteful number, since it uses less digits than its factorization.

396129055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72258.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 396129055 is about 19902.9911068663. The cubic root of 396129055 is about 734.4218106995.

The spelling of 396129055 in words is "three hundred ninety-six million, one hundred twenty-nine thousand, fifty-five".