4009154 has 4 divisors (see below), whose sum is σ = 6013734. Its totient is φ = 2004576.

The previous prime is 4009151. The next prime is 4009193. The reversal of 4009154 is 4519004.

It is a happy number.

4009154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2739025 + 1270129 = 1655^2 + 1127^2 .

It is not an unprimeable number, because it can be changed into a prime (4009151) by changing a digit.

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 as a sum of consecutive naturals, namely, 1002287 + ... + 1002290.

Almost surely, 2^4009154 is an apocalyptic number.

4009154 is a deficient number, since it is larger than the sum of its proper divisors (2004580).

4009154 is a wasteful number, since it uses less digits than its factorization.

4009154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004579.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 4009154 is about 2002.2871921880. The cubic root of 4009154 is about 158.8611051845.

The spelling of 4009154 in words is "four million, nine thousand, one hundred fifty-four".