40154454 has 40 divisors (see below), whose sum is σ = 90378288. Its totient is φ = 13325040.

The previous prime is 40154441. The next prime is 40154461. The reversal of 40154454 is 45445104.

40154454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40154454² = 3224760352076232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 49984 + ... + 50780.

Almost surely, 2^40154454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40154454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45189144).

40154454 is an abundant number, since it is smaller than the sum of its proper divisors (50223834).

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

40154454 is a wasteful number, since it uses less digits than its factorization.

40154454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 40154454 is about 6336.7542164739. The cubic root of 40154454 is about 342.4348116828.

Adding to 40154454 its reverse (45445104), we get a palindrome (85599558).

The spelling of 40154454 in words is "forty million, one hundred fifty-four thousand, four hundred fifty-four".