400822973 has 2 divisors, whose sum is σ = 400822974. Its totient is φ = 400822972.

The previous prime is 400822967. The next prime is 400822987. The reversal of 400822973 is 379228004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205578244 + 195244729 = 14338^2 + 13973^2 .

It is a cyclic number.

It is not a de Polignac number, because 400822973 - 2¹⁸ = 400560829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400822943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200411486 + 200411487.

It is an arithmetic number, because the mean of its divisors is an integer number (200411487).

Almost surely, 2^400822973 is an apocalyptic number.

It is an amenable number.

400822973 is a deficient number, since it is larger than the sum of its proper divisors (1).

400822973 is an equidigital number, since it uses as much as digits as its factorization.

400822973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 400822973 is about 20020.5637533013. The cubic root of 400822973 is about 737.3112633192.

The spelling of 400822973 in words is "four hundred million, eight hundred twenty-two thousand, nine hundred seventy-three".