11961954 has 24 divisors (see below), whose sum is σ = 26151372. Its totient is φ = 3951360.

The previous prime is 11961899. The next prime is 11961967. The reversal of 11961954 is 45916911.

It can be written as a sum of positive squares in 2 ways, for example, as 11716929 + 245025 = 3423^2 + 495^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 907 + ... + 4974.

Almost surely, 2^11961954 is an apocalyptic number.

11961954 is an abundant number, since it is smaller than the sum of its proper divisors (14189418).

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

11961954 is a wasteful number, since it uses less digits than its factorization.

11961954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6002 (or 5999 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 11961954 is about 3458.6057884645. The cubic root of 11961954 is about 228.7006379201.

The spelling of 11961954 in words is "eleven million, nine hundred sixty-one thousand, nine hundred fifty-four".