1939954 has 4 divisors (see below), whose sum is σ = 2909934. Its totient is φ = 969976.

The previous prime is 1939939. The next prime is 1939961. The reversal of 1939954 is 4599391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4599391 = 181 ⋅25411.

It can be written as a sum of positive squares in only one way, i.e., 1863225 + 76729 = 1365^2 + 277^2 .

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, 484987 + ... + 484990.

2^1939954 is an apocalyptic number.

1939954 is a deficient number, since it is larger than the sum of its proper divisors (969980).

1939954 is an equidigital number, since it uses as much as digits as its factorization.

1939954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969979.

The product of its digits is 43740, while the sum is 40.

The square root of 1939954 is about 1392.8223145829. The cubic root of 1939954 is about 124.7183846856.

The spelling of 1939954 in words is "one million, nine hundred thirty-nine thousand, nine hundred fifty-four".