400426051 has 2 divisors, whose sum is σ = 400426052. Its totient is φ = 400426050.

The previous prime is 400426003. The next prime is 400426063. The reversal of 400426051 is 150624004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400426051 - 2¹³ = 400417859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (400426001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200213025 + 200213026.

It is an arithmetic number, because the mean of its divisors is an integer number (200213026).

Almost surely, 2^400426051 is an apocalyptic number.

400426051 is a deficient number, since it is larger than the sum of its proper divisors (1).

400426051 is an equidigital number, since it uses as much as digits as its factorization.

400426051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 400426051 is about 20010.6484402680. The cubic root of 400426051 is about 737.0678044554.

The spelling of 400426051 in words is "four hundred million, four hundred twenty-six thousand, fifty-one".