84699401 has 16 divisors (see below), whose sum is σ = 90675600. Its totient is φ = 78962688.

The previous prime is 84699371. The next prime is 84699427. The reversal of 84699401 is 10499648.

Added to its reverse (10499648) it gives a square (95199049 = 9757²).

It can be written as a sum of positive squares in 8 ways, for example, as 9859600 + 74839801 = 3140^2 + 8651^2 .

It is a cyclic number.

It is not a de Polignac number, because 84699401 - 2⁶ = 84699337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84699451) 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, 206885 + ... + 207293.

It is an arithmetic number, because the mean of its divisors is an integer number (5667225).

Almost surely, 2^84699401 is an apocalyptic number.

It is an amenable number.

84699401 is a deficient number, since it is larger than the sum of its proper divisors (5976199).

84699401 is a wasteful number, since it uses less digits than its factorization.

84699401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 84699401 is about 9203.2277490020. The cubic root of 84699401 is about 439.1640481192.

Adding to 84699401 its reverse (10499648), we get a square (95199049 = 9757²).

The spelling of 84699401 in words is "eighty-four million, six hundred ninety-nine thousand, four hundred one".