391354 has 4 divisors (see below), whose sum is σ = 587034. Its totient is φ = 195676.

The previous prime is 391351. The next prime is 391367. The reversal of 391354 is 453193.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 390625 + 729 = 625^2 + 27^2 .

It is not an unprimeable number, because it can be changed into a prime (391351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97837 + ... + 97840.

391354 is a Friedman number, since it can be written as 9^3+5^(4+3+1), using all its digits and the basic arithmetic operations.

2³⁹¹³⁵⁴ is an apocalyptic number.

391354 is a deficient number, since it is larger than the sum of its proper divisors (195680).

391354 is a wasteful number, since it uses less digits than its factorization.

391354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195679.

The product of its digits is 1620, while the sum is 25.

The square root of 391354 is about 625.5829281558. The cubic root of 391354 is about 73.1458895198.

The spelling of 391354 in words is "three hundred ninety-one thousand, three hundred fifty-four".