8400261 has 16 divisors (see below), whose sum is σ = 12484800. Its totient is φ = 4992768.

The previous prime is 8400253. The next prime is 8400269. The reversal of 8400261 is 1620048.

It is an interprime number because it is at equal distance from previous prime (8400253) and next prime (8400269).

It is not a de Polignac number, because 8400261 - 2³ = 8400253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8400269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3366 + ... + 5303.

It is an arithmetic number, because the mean of its divisors is an integer number (780300).

Almost surely, 2^8400261 is an apocalyptic number.

It is an amenable number.

8400261 is a deficient number, since it is larger than the sum of its proper divisors (4084539).

8400261 is a wasteful number, since it uses less digits than its factorization.

8400261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8708.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 8400261 is about 2898.3203756659. The cubic root of 8400261 is about 203.2813767336.

The spelling of 8400261 in words is "eight million, four hundred thousand, two hundred sixty-one".