400499303 has 4 divisors (see below), whose sum is σ = 402295488. Its totient is φ = 398703120.

The previous prime is 400499287. The next prime is 400499339. The reversal of 400499303 is 303994004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400499303 - 2⁴ = 400499287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400499303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400499503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 897758 + ... + 898203.

It is an arithmetic number, because the mean of its divisors is an integer number (100573872).

Almost surely, 2^400499303 is an apocalyptic number.

400499303 is a deficient number, since it is larger than the sum of its proper divisors (1796185).

400499303 is a wasteful number, since it uses less digits than its factorization.

400499303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796184.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 400499303 is about 20012.4786820623. The cubic root of 400499303 is about 737.1127469183.

The spelling of 400499303 in words is "four hundred million, four hundred ninety-nine thousand, three hundred three".