390541 has 4 divisors (see below), whose sum is σ = 413532. Its totient is φ = 367552.

The previous prime is 390539. The next prime is 390553. The reversal of 390541 is 145093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145093 = 13 ⋅11161.

It can be written as a sum of positive squares in 2 ways, for example, as 265225 + 125316 = 515^2 + 354^2 .

It is a cyclic number.

It is not a de Polignac number, because 390541 - 2¹ = 390539 is a prime.

It is a Duffinian number.

390541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390581) 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, 11470 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (103383).

2³⁹⁰⁵⁴¹ is an apocalyptic number.

It is an amenable number.

390541 is a deficient number, since it is larger than the sum of its proper divisors (22991).

390541 is a wasteful number, since it uses less digits than its factorization.

390541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22990.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 390541 is about 624.9327963869. The cubic root of 390541 is about 73.0952032399.

The spelling of 390541 in words is "three hundred ninety thousand, five hundred forty-one".