400816353 has 8 divisors (see below), whose sum is σ = 610767808. Its totient is φ = 229037904.

The previous prime is 400816349. The next prime is 400816357. The reversal of 400816353 is 353618004.

It is an interprime number because it is at equal distance from previous prime (400816349) and next prime (400816357).

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

It is not a de Polignac number, because 400816353 - 2² = 400816349 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 400816353.

It is not an unprimeable number, because it can be changed into a prime (400816357) 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, 9543226 + ... + 9543267.

It is an arithmetic number, because the mean of its divisors is an integer number (76345976).

Almost surely, 2^400816353 is an apocalyptic number.

It is an amenable number.

400816353 is a deficient number, since it is larger than the sum of its proper divisors (209951455).

400816353 is a wasteful number, since it uses less digits than its factorization.

400816353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19086503.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 400816353 is about 20020.3984226089. The cubic root of 400816353 is about 737.3072041478.

The spelling of 400816353 in words is "four hundred million, eight hundred sixteen thousand, three hundred fifty-three".