1944986404 has 9 divisors (see below), whose sum is σ = 3403880571. Its totient is φ = 972449100.

The previous prime is 1944986387. The next prime is 1944986431. The reversal of 1944986404 is 4046894491.

The square root of 1944986404 is 44102.

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

It is a super-2 number, since 2×1944986404² = 7565944223489702432, which contains 22 as substring.

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, 77179 + ... + 99229.

Almost surely, 2^1944986404 is an apocalyptic number.

1944986404 is the 44102-nd square number.

It is an amenable number.

1944986404 is a deficient number, since it is larger than the sum of its proper divisors (1458894167).

1944986404 is an frugal number, since it uses more digits than its factorization.

1944986404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44106 (or 22053 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The cubic root of 1944986404 is about 1248.2613489820.

Multiplying 1944986404 by its sum of digits (49), we get a square (95304333796 = 308714²).

The spelling of 1944986404 in words is "one billion, nine hundred forty-four million, nine hundred eighty-six thousand, four hundred four".