400760649 has 8 divisors (see below), whose sum is σ = 593719520. Its totient is φ = 267173748.

The previous prime is 400760639. The next prime is 400760651. The reversal of 400760649 is 946067004.

400760649 is a `hidden beast` number, since 4 + 0 + 0 + 7 + 6 + 0 + 649 = 666.

It is not a de Polignac number, because 400760649 - 2⁹ = 400760137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400760629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7421467 + ... + 7421520.

It is an arithmetic number, because the mean of its divisors is an integer number (74214940).

Almost surely, 2^400760649 is an apocalyptic number.

It is an amenable number.

400760649 is a deficient number, since it is larger than the sum of its proper divisors (192958871).

400760649 is a wasteful number, since it uses less digits than its factorization.

400760649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14842996 (or 14842990 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 400760649 is about 20019.0071931652. The cubic root of 400760649 is about 737.2730464735.

The spelling of 400760649 in words is "four hundred million, seven hundred sixty thousand, six hundred forty-nine".