4155390 has 24 divisors (see below), whose sum is σ = 10804248. Its totient is φ = 1108080.

The previous prime is 4155367. The next prime is 4155401. The reversal of 4155390 is 935514.

It is a Curzon number.

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22996 + ... + 23175.

It is an arithmetic number, because the mean of its divisors is an integer number (450177).

Almost surely, 2^4155390 is an apocalyptic number.

4155390 is an abundant number, since it is smaller than the sum of its proper divisors (6648858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4155390 is a wasteful number, since it uses less digits than its factorization.

4155390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46184 (or 46181 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 4155390 is about 2038.4773729429. The cubic root of 4155390 is about 160.7695995845.

The spelling of 4155390 in words is "four million, one hundred fifty-five thousand, three hundred ninety".