4155406 has 4 divisors (see below), whose sum is σ = 6233112. Its totient is φ = 2077702.

The previous prime is 4155401. The next prime is 4155409. The reversal of 4155406 is 6045514.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4155401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1038850 + ... + 1038853.

It is an arithmetic number, because the mean of its divisors is an integer number (1558278).

Almost surely, 2^4155406 is an apocalyptic number.

4155406 is a deficient number, since it is larger than the sum of its proper divisors (2077706).

4155406 is a wasteful number, since it uses less digits than its factorization.

4155406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077705.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 4155406 is about 2038.4812974369. The cubic root of 4155406 is about 160.7698059278.

It can be divided in two parts, 41 and 55406, that multiplied together give a triangular number (2271646 = T₂₁₃₁).

The spelling of 4155406 in words is "four million, one hundred fifty-five thousand, four hundred six".