400093919 has 2 divisors, whose sum is σ = 400093920. Its totient is φ = 400093918.

The previous prime is 400093907. The next prime is 400093931. The reversal of 400093919 is 919390004.

It is a balanced prime because it is at equal distance from previous prime (400093907) and next prime (400093931).

It is a cyclic number.

It is not a de Polignac number, because 400093919 - 2¹⁶ = 400028383 is a prime.

It is a super-2 number, since 2×400093919² = 320150288041557122, 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 (400090919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200046959 + 200046960.

It is an arithmetic number, because the mean of its divisors is an integer number (200046960).

Almost surely, 2^400093919 is an apocalyptic number.

400093919 is a deficient number, since it is larger than the sum of its proper divisors (1).

400093919 is an equidigital number, since it uses as much as digits as its factorization.

400093919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 400093919 is about 20002.3478371915. The cubic root of 400093919 is about 736.8639619744.

The spelling of 400093919 in words is "four hundred million, ninety-three thousand, nine hundred nineteen".