396176421 has 8 divisors (see below), whose sum is σ = 533681344. Its totient is φ = 261394560.

The previous prime is 396176411. The next prime is 396176441. The reversal of 396176421 is 124671693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 396176421 - 2¹⁰ = 396175397 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 396176421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396176411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680425 + ... + 681006.

It is an arithmetic number, because the mean of its divisors is an integer number (66710168).

Almost surely, 2^396176421 is an apocalyptic number.

It is an amenable number.

396176421 is a deficient number, since it is larger than the sum of its proper divisors (137504923).

396176421 is a wasteful number, since it uses less digits than its factorization.

396176421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361531.

The product of its digits is 54432, while the sum is 39.

The square root of 396176421 is about 19904.1809929472. The cubic root of 396176421 is about 734.4510816628.

The spelling of 396176421 in words is "three hundred ninety-six million, one hundred seventy-six thousand, four hundred twenty-one".