397779967204 has 9 divisors (see below), whose sum is σ = 696117150057. Its totient is φ = 198889352904.

The previous prime is 397779967181. The next prime is 397779967223. The reversal of 397779967204 is 402769977793.

The square root of 397779967204 is 630698.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4650967204 + 393129000000 = 68198^2 + 627000^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1103722 + ... + 1419070.

Almost surely, 2^397779967204 is an apocalyptic number.

397779967204 is the 630698-th square number.

It is an amenable number.

397779967204 is a deficient number, since it is larger than the sum of its proper divisors (298337182853).

397779967204 is an frugal number, since it uses more digits than its factorization.

397779967204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630702 (or 315351 counting only the distinct ones).

The product of its (nonzero) digits is 252047376, while the sum is 70.

The spelling of 397779967204 in words is "three hundred ninety-seven billion, seven hundred seventy-nine million, nine hundred sixty-seven thousand, two hundred four".