361988401 has 4 divisors (see below), whose sum is σ = 362086912. Its totient is φ = 361889892.

The previous prime is 361988377. The next prime is 361988441. The reversal of 361988401 is 104889163.

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: 104889163 = 757 ⋅138559.

It is a cyclic number.

It is not a de Polignac number, because 361988401 - 2⁵ = 361988369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361988441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43521 + ... + 51166.

It is an arithmetic number, because the mean of its divisors is an integer number (90521728).

Almost surely, 2^361988401 is an apocalyptic number.

It is an amenable number.

361988401 is a deficient number, since it is larger than the sum of its proper divisors (98511).

361988401 is an equidigital number, since it uses as much as digits as its factorization.

361988401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98510.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 361988401 is about 19025.9927730460. The cubic root of 361988401 is about 712.6859847300.

The spelling of 361988401 in words is "three hundred sixty-one million, nine hundred eighty-eight thousand, four hundred one".