400451374 has 8 divisors (see below), whose sum is σ = 613457568. Its totient is φ = 195965520.

The previous prime is 400451351. The next prime is 400451377. The reversal of 400451374 is 473154004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×400451374² = 320722605876975752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400451377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2129967 + ... + 2130154.

It is an arithmetic number, because the mean of its divisors is an integer number (76682196).

Almost surely, 2^400451374 is an apocalyptic number.

400451374 is a deficient number, since it is larger than the sum of its proper divisors (213006194).

400451374 is a wasteful number, since it uses less digits than its factorization.

400451374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260170.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 400451374 is about 20011.2811683810. The cubic root of 400451374 is about 737.0833415519.

The spelling of 400451374 in words is "four hundred million, four hundred fifty-one thousand, three hundred seventy-four".