10040399 has 2 divisors, whose sum is σ = 10040400. Its totient is φ = 10040398.

The previous prime is 10040363. The next prime is 10040413. The reversal of 10040399 is 99304001.

It is a happy number.

10040399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10040399 - 2²⁰ = 8991823 is a prime.

It is a super-2 number, since 2×10040399² = 201619224158402, which contains 22 as substring.

It is a zygodrome in base 6.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10040299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5020199 + 5020200.

It is an arithmetic number, because the mean of its divisors is an integer number (5020200).

Almost surely, 2^10040399 is an apocalyptic number.

10040399 is a deficient number, since it is larger than the sum of its proper divisors (1).

10040399 is an equidigital number, since it uses as much as digits as its factorization.

10040399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 10040399 is about 3168.6588645672. The cubic root of 10040399 is about 215.7332025447.

The spelling of 10040399 in words is "ten million, forty thousand, three hundred ninety-nine".