400450757 has 4 divisors (see below), whose sum is σ = 457658016. Its totient is φ = 343243500.

The previous prime is 400450747. The next prime is 400450789. The reversal of 400450757 is 757054004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400450757 - 2⁶ = 400450693 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 (400450717) 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 3 ways as a sum of consecutive naturals, for example, 28603619 + ... + 28603632.

It is an arithmetic number, because the mean of its divisors is an integer number (114414504).

Almost surely, 2^400450757 is an apocalyptic number.

It is an amenable number.

400450757 is a deficient number, since it is larger than the sum of its proper divisors (57207259).

400450757 is an equidigital number, since it uses as much as digits as its factorization.

400450757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57207258.

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 400450757 is about 20011.2657520708. The cubic root of 400450757 is about 737.0829629952.

The spelling of 400450757 in words is "four hundred million, four hundred fifty thousand, seven hundred fifty-seven".