401009599 has 2 divisors, whose sum is σ = 401009600. Its totient is φ = 401009598.

The previous prime is 401009569. The next prime is 401009621. The reversal of 401009599 is 995900104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401009599 - 2¹³ = 401001407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401009519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200504799 + 200504800.

It is an arithmetic number, because the mean of its divisors is an integer number (200504800).

Almost surely, 2^401009599 is an apocalyptic number.

401009599 is a deficient number, since it is larger than the sum of its proper divisors (1).

401009599 is an equidigital number, since it uses as much as digits as its factorization.

401009599 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 37.

The square root of 401009599 is about 20025.2240686590. The cubic root of 401009599 is about 737.4256780031.

The spelling of 401009599 in words is "four hundred one million, nine thousand, five hundred ninety-nine".