400199519 has 2 divisors, whose sum is σ = 400199520. Its totient is φ = 400199518.

The previous prime is 400199477. The next prime is 400199531. The reversal of 400199519 is 915991004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400199519 - 2²⁰ = 399150943 is a prime.

It is a super-2 number, since 2×400199519² = 320319310015662722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400196519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200099759 + 200099760.

It is an arithmetic number, because the mean of its divisors is an integer number (200099760).

Almost surely, 2^400199519 is an apocalyptic number.

400199519 is a deficient number, since it is larger than the sum of its proper divisors (1).

400199519 is an equidigital number, since it uses as much as digits as its factorization.

400199519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 400199519 is about 20004.9873531577. The cubic root of 400199519 is about 736.9287850786.

The spelling of 400199519 in words is "four hundred million, one hundred ninety-nine thousand, five hundred nineteen".