83430945 has 64 divisors (see below), whose sum is σ = 161360640. Its totient is φ = 40656384.

The previous prime is 83430943. The next prime is 83430979. The reversal of 83430945 is 54903438.

It is not a de Polignac number, because 83430945 - 2¹ = 83430943 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83430943) 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, 240262 + ... + 240608.

It is an arithmetic number, because the mean of its divisors is an integer number (2521260).

Almost surely, 2^83430945 is an apocalyptic number.

It is an amenable number.

83430945 is a deficient number, since it is larger than the sum of its proper divisors (77929695).

83430945 is a wasteful number, since it uses less digits than its factorization.

83430945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 83430945 is about 9134.0541382236. The cubic root of 83430945 is about 436.9607091136.

The spelling of 83430945 in words is "eighty-three million, four hundred thirty thousand, nine hundred forty-five".