11978954 has 16 divisors (see below), whose sum is σ = 19717992. Its totient is φ = 5423808.

The previous prime is 11978921. The next prime is 11978959. The reversal of 11978954 is 45987911.

11978954 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6385729 + 5593225 = 2527^2 + 2365^2 .

It is not an unprimeable number, because it can be changed into a prime (11978959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2969 + ... + 5724.

Almost surely, 2^11978954 is an apocalyptic number.

11978954 is a deficient number, since it is larger than the sum of its proper divisors (7739038).

11978954 is a wasteful number, since it uses less digits than its factorization.

11978954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8761.

The product of its digits is 90720, while the sum is 44.

The square root of 11978954 is about 3461.0625536098. The cubic root of 11978954 is about 228.8089276555.

The spelling of 11978954 in words is "eleven million, nine hundred seventy-eight thousand, nine hundred fifty-four".