400072199 has 2 divisors, whose sum is σ = 400072200. Its totient is φ = 400072198.

The previous prime is 400072147. The next prime is 400072223. The reversal of 400072199 is 991270004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400072199 - 2¹² = 400068103 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400072499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200036099 + 200036100.

It is an arithmetic number, because the mean of its divisors is an integer number (200036100).

Almost surely, 2^400072199 is an apocalyptic number.

400072199 is a deficient number, since it is larger than the sum of its proper divisors (1).

400072199 is an equidigital number, since it uses as much as digits as its factorization.

400072199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 400072199 is about 20001.8048935590. The cubic root of 400072199 is about 736.8506276262.

The spelling of 400072199 in words is "four hundred million, seventy-two thousand, one hundred ninety-nine".