356401109 has 4 divisors (see below), whose sum is σ = 356463360. Its totient is φ = 356338860.

The previous prime is 356401099. The next prime is 356401117. The reversal of 356401109 is 901104653.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 901104653 = 4283 ⋅210391.

It is a cyclic number.

It is not a de Polignac number, because 356401109 - 2⁴ = 356401093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356401139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21557 + ... + 34314.

It is an arithmetic number, because the mean of its divisors is an integer number (89115840).

Almost surely, 2^356401109 is an apocalyptic number.

It is an amenable number.

356401109 is a deficient number, since it is larger than the sum of its proper divisors (62251).

356401109 is an equidigital number, since it uses as much as digits as its factorization.

356401109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62250.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 356401109 is about 18878.5886389846. The cubic root of 356401109 is about 709.0001856710. Note that the first 3 decimals are identical.

The spelling of 356401109 in words is "three hundred fifty-six million, four hundred one thousand, one hundred nine".