10991454 has 8 divisors (see below), whose sum is σ = 21982920. Its totient is φ = 3663816.

The previous prime is 10991429. The next prime is 10991459. The reversal of 10991454 is 45419901.

It is a sphenic number, since it is the product of 3 distinct primes.

10991454 is an admirable number.

It is a super-3 number, since 3×10991454³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10991459) 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, 915949 + ... + 915960.

It is an arithmetic number, because the mean of its divisors is an integer number (2747865).

Almost surely, 2^10991454 is an apocalyptic number.

10991454 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

10991454 is a wasteful number, since it uses less digits than its factorization.

10991454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831914.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 10991454 is about 3315.3361820485. The cubic root of 10991454 is about 222.3403997903.

The spelling of 10991454 in words is "ten million, nine hundred ninety-one thousand, four hundred fifty-four".