1969961 has 4 divisors (see below), whose sum is σ = 2251392. Its totient is φ = 1688532.

The previous prime is 1969949. The next prime is 1969967. The reversal of 1969961 is 1699691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1699691 = 7 ⋅242813.

It is a cyclic number.

It is not a de Polignac number, because 1969961 - 2¹⁴ = 1953577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1969967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140705 + ... + 140718.

It is an arithmetic number, because the mean of its divisors is an integer number (562848).

2^1969961 is an apocalyptic number.

It is an amenable number.

1969961 is a deficient number, since it is larger than the sum of its proper divisors (281431).

1969961 is an equidigital number, since it uses as much as digits as its factorization.

1969961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281430.

The product of its digits is 26244, while the sum is 41.

The square root of 1969961 is about 1403.5529915183. The cubic root of 1969961 is about 125.3581409008.

The spelling of 1969961 in words is "one million, nine hundred sixty-nine thousand, nine hundred sixty-one".