349727401 has 3 divisors (see below), whose sum is σ = 349746103. Its totient is φ = 349708700.

The previous prime is 349727381. The next prime is 349727431. The reversal of 349727401 is 104727943.

The square root of 349727401 is 18701.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 104727943 = 19 ⋅5511997.

It can be written as a sum of positive squares in only one way, i.e., 60047001 + 289680400 = 7749^2 + 17020^2 .

It is not a de Polignac number, because 349727401 - 2¹⁵ = 349694633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349727431) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9351 + ... + 28051.

Almost surely, 2^349727401 is an apocalyptic number.

349727401 is the 18701-st square number.

349727401 is the 9351-st centered octagonal number.

It is an amenable number.

349727401 is a deficient number, since it is larger than the sum of its proper divisors (18702).

349727401 is an frugal number, since it uses more digits than its factorization.

349727401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37402 (or 18701 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The cubic root of 349727401 is about 704.5468650587.

The spelling of 349727401 in words is "three hundred forty-nine million, seven hundred twenty-seven thousand, four hundred one".