4400149 has 4 divisors (see below), whose sum is σ = 4738636. Its totient is φ = 4061664.

The previous prime is 4400131. The next prime is 4400167. The reversal of 4400149 is 9410044.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (4400131) and next prime (4400167).

It can be written as a sum of positive squares in 2 ways, for example, as 1782225 + 2617924 = 1335^2 + 1618^2 .

It is a cyclic number.

It is not a de Polignac number, because 4400149 - 2⁷ = 4400021 is a prime.

It is a super-2 number, since 2×4400149² = 38722622444402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400129) 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, 169224 + ... + 169249.

It is an arithmetic number, because the mean of its divisors is an integer number (1184659).

Almost surely, 2^4400149 is an apocalyptic number.

It is an amenable number.

4400149 is a deficient number, since it is larger than the sum of its proper divisors (338487).

4400149 is a wasteful number, since it uses less digits than its factorization.

4400149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338486.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 4400149 is about 2097.6532125211. The cubic root of 4400149 is about 163.8661037791.

The spelling of 4400149 in words is "four million, four hundred thousand, one hundred forty-nine".