400734149 has 16 divisors (see below), whose sum is σ = 450201600. Its totient is φ = 354461184.

The previous prime is 400734143. The next prime is 400734163. The reversal of 400734149 is 941437004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400734149 - 2⁴ = 400734133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400734143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36137 + ... + 45905.

It is an arithmetic number, because the mean of its divisors is an integer number (28137600).

Almost surely, 2^400734149 is an apocalyptic number.

It is an amenable number.

400734149 is a deficient number, since it is larger than the sum of its proper divisors (49467451).

400734149 is a wasteful number, since it uses less digits than its factorization.

400734149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9932.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 400734149 is about 20018.3453112389. The cubic root of 400734149 is about 737.2567955713.

The spelling of 400734149 in words is "four hundred million, seven hundred thirty-four thousand, one hundred forty-nine".