400734723 has 8 divisors (see below), whose sum is σ = 535195648. Its totient is φ = 266715144.

The previous prime is 400734709. The next prime is 400734743. The reversal of 400734723 is 327437004.

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

It is not a de Polignac number, because 400734723 - 2¹⁰ = 400733699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400734743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108211 + ... + 111852.

It is an arithmetic number, because the mean of its divisors is an integer number (66899456).

Almost surely, 2^400734723 is an apocalyptic number.

400734723 is a deficient number, since it is larger than the sum of its proper divisors (134460925).

400734723 is a wasteful number, since it uses less digits than its factorization.

400734723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220673.

The product of its (nonzero) digits is 14112, while the sum is 30.

The square root of 400734723 is about 20018.3596480831. The cubic root of 400734723 is about 737.2571475795.

The spelling of 400734723 in words is "four hundred million, seven hundred thirty-four thousand, seven hundred twenty-three".