994393156 has 9 divisors (see below), whose sum is σ = 1740298399. Its totient is φ = 497165044.

The previous prime is 994393033. The next prime is 994393217. The reversal of 994393156 is 651393499.

The square root of 994393156 is 31534.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 55185 + ... + 70951.

Almost surely, 2^994393156 is an apocalyptic number.

994393156 is the 31534-th square number.

It is an amenable number.

994393156 is a deficient number, since it is larger than the sum of its proper divisors (745905243).

994393156 is an frugal number, since it uses more digits than its factorization.

994393156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31538 (or 15769 counting only the distinct ones).

The product of its digits is 787320, while the sum is 49.

The cubic root of 994393156 is about 998.1275481122.

Multiplying 994393156 by its sum of digits (49), we get a square (48725264644 = 220738²).

The spelling of 994393156 in words is "nine hundred ninety-four million, three hundred ninety-three thousand, one hundred fifty-six".