83894405 has 64 divisors (see below), whose sum is σ = 132088320. Its totient is φ = 49766400.

The previous prime is 83894399. The next prime is 83894407. The reversal of 83894405 is 50449838.

It is not a de Polignac number, because 83894405 - 2⁶ = 83894341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83894407) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 463415 + ... + 463595.

It is an arithmetic number, because the mean of its divisors is an integer number (2063880).

Almost surely, 2^83894405 is an apocalyptic number.

83894405 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

83894405 is a deficient number, since it is larger than the sum of its proper divisors (48193915).

83894405 is a wasteful number, since it uses less digits than its factorization.

83894405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 83894405 is about 9159.3888988294. The cubic root of 83894405 is about 437.7683230203.

The spelling of 83894405 in words is "eighty-three million, eight hundred ninety-four thousand, four hundred five".