19940741 has 4 divisors (see below), whose sum is σ = 20238432. Its totient is φ = 19643052.

The previous prime is 19940729. The next prime is 19940749. The reversal of 19940741 is 14704991.

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: 14704991 = 7 ⋅2100713.

It is a cyclic number.

It is not a de Polignac number, because 19940741 - 2¹⁸ = 19678597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19940749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148745 + ... + 148878.

It is an arithmetic number, because the mean of its divisors is an integer number (5059608).

Almost surely, 2^19940741 is an apocalyptic number.

It is an amenable number.

19940741 is a deficient number, since it is larger than the sum of its proper divisors (297691).

19940741 is an equidigital number, since it uses as much as digits as its factorization.

19940741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297690.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 19940741 is about 4465.5056824508. The cubic root of 19940741 is about 271.1734069883.

The spelling of 19940741 in words is "nineteen million, nine hundred forty thousand, seven hundred forty-one".