400721483 has 4 divisors (see below), whose sum is σ = 409247520. Its totient is φ = 392195448.

The previous prime is 400721473. The next prime is 400721537. The reversal of 400721483 is 384127004.

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

It is not a de Polignac number, because 400721483 - 2⁸ = 400721227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400721423) 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, 4262948 + ... + 4263041.

It is an arithmetic number, because the mean of its divisors is an integer number (102311880).

Almost surely, 2^400721483 is an apocalyptic number.

400721483 is a deficient number, since it is larger than the sum of its proper divisors (8526037).

400721483 is an equidigital number, since it uses as much as digits as its factorization.

400721483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8526036.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 400721483 is about 20018.0289489250. The cubic root of 400721483 is about 737.2490280002.

Adding to 400721483 its reverse (384127004), we get a palindrome (784848487).

The spelling of 400721483 in words is "four hundred million, seven hundred twenty-one thousand, four hundred eighty-three".