400111207 has 2 divisors, whose sum is σ = 400111208. Its totient is φ = 400111206.

The previous prime is 400111183. The next prime is 400111219. The reversal of 400111207 is 702111004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400111207 - 2¹⁵ = 400078439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400111307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200055603 + 200055604.

It is an arithmetic number, because the mean of its divisors is an integer number (200055604).

Almost surely, 2^400111207 is an apocalyptic number.

400111207 is a deficient number, since it is larger than the sum of its proper divisors (1).

400111207 is an equidigital number, since it uses as much as digits as its factorization.

400111207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 400111207 is about 20002.7799817925. The cubic root of 400111207 is about 736.8745750830.

The spelling of 400111207 in words is "four hundred million, one hundred eleven thousand, two hundred seven".