19940964 has 24 divisors (see below), whose sum is σ = 46676448. Its totient is φ = 6625920.

The previous prime is 19940957. The next prime is 19940971. The reversal of 19940964 is 46904991.

It is an interprime number because it is at equal distance from previous prime (19940957) and next prime (19940971).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1579 + ... + 6509.

It is an arithmetic number, because the mean of its divisors is an integer number (1944852).

Almost surely, 2^19940964 is an apocalyptic number.

It is an amenable number.

19940964 is an abundant number, since it is smaller than the sum of its proper divisors (26735484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19940964 is a wasteful number, since it uses less digits than its factorization.

19940964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5275 (or 5273 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 19940964 is about 4465.5306515576. The cubic root of 19940964 is about 271.1744178408.

The spelling of 19940964 in words is "nineteen million, nine hundred forty thousand, nine hundred sixty-four".