1939426 has 4 divisors (see below), whose sum is σ = 2909142. Its totient is φ = 969712.

The previous prime is 1939409. The next prime is 1939439. The reversal of 1939426 is 6249391.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1442401 + 497025 = 1201^2 + 705^2 .

It is a super-2 number, since 2×1939426² = 7522746418952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1939391 and 1939400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484855 + ... + 484858.

2^1939426 is an apocalyptic number.

1939426 is a deficient number, since it is larger than the sum of its proper divisors (969716).

1939426 is an equidigital number, since it uses as much as digits as its factorization.

1939426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969715.

The product of its digits is 11664, while the sum is 34.

The square root of 1939426 is about 1392.6327584830. The cubic root of 1939426 is about 124.7070687331.

The spelling of 1939426 in words is "one million, nine hundred thirty-nine thousand, four hundred twenty-six".