396430436 has 6 divisors (see below), whose sum is σ = 693753270. Its totient is φ = 198215216.

The previous prime is 396430427. The next prime is 396430439. The reversal of 396430436 is 634034693.

It can be written as a sum of positive squares in only one way, i.e., 389825536 + 6604900 = 19744^2 + 2570^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 396430436.

It is not an unprimeable number, because it can be changed into a prime (396430439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49553801 + ... + 49553808.

It is an arithmetic number, because the mean of its divisors is an integer number (115625545).

Almost surely, 2^396430436 is an apocalyptic number.

It is an amenable number.

396430436 is a deficient number, since it is larger than the sum of its proper divisors (297322834).

396430436 is a wasteful number, since it uses less digits than its factorization.

396430436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99107613 (or 99107611 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 38.

The square root of 396430436 is about 19910.5609162575. The cubic root of 396430436 is about 734.6080165732.

The spelling of 396430436 in words is "three hundred ninety-six million, four hundred thirty thousand, four hundred thirty-six".