106400999 has 2 divisors, whose sum is σ = 106401000. Its totient is φ = 106400998.

The previous prime is 106400989. The next prime is 106401017. The reversal of 106400999 is 999004601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 106400999 - 2⁸ = 106400743 is a prime.

It is a super-2 number, since 2×106400999² = 22642345176396002, which contains 22 as substring.

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 (106400989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53200499 + 53200500.

It is an arithmetic number, because the mean of its divisors is an integer number (53200500).

Almost surely, 2^106400999 is an apocalyptic number.

106400999 is a deficient number, since it is larger than the sum of its proper divisors (1).

106400999 is an equidigital number, since it uses as much as digits as its factorization.

106400999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 106400999 is about 10315.0859909164. The cubic root of 106400999 is about 473.8583834563.

The spelling of 106400999 in words is "one hundred six million, four hundred thousand, nine hundred ninety-nine".