400619743 has 2 divisors, whose sum is σ = 400619744. Its totient is φ = 400619742.

The previous prime is 400619729. The next prime is 400619767. The reversal of 400619743 is 347916004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400619743 - 2²⁵ = 367065311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400619699 and 400619708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400614743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200309871 + 200309872.

It is an arithmetic number, because the mean of its divisors is an integer number (200309872).

Almost surely, 2^400619743 is an apocalyptic number.

400619743 is a deficient number, since it is larger than the sum of its proper divisors (1).

400619743 is an equidigital number, since it uses as much as digits as its factorization.

400619743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 400619743 is about 20015.4875783729. The cubic root of 400619743 is about 737.1866288292.

The spelling of 400619743 in words is "four hundred million, six hundred nineteen thousand, seven hundred forty-three".