83947051 has 4 divisors (see below), whose sum is σ = 85899352. Its totient is φ = 81994752.

The previous prime is 83947021. The next prime is 83947057. The reversal of 83947051 is 15074938.

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

It is a cyclic number.

It is not a de Polignac number, because 83947051 - 2¹¹ = 83945003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83947051.

It is not an unprimeable number, because it can be changed into a prime (83947057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976086 + ... + 976171.

It is an arithmetic number, because the mean of its divisors is an integer number (21474838).

Almost surely, 2^83947051 is an apocalyptic number.

83947051 is a deficient number, since it is larger than the sum of its proper divisors (1952301).

83947051 is a wasteful number, since it uses less digits than its factorization.

83947051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952300.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 83947051 is about 9162.2623297961. The cubic root of 83947051 is about 437.8598743460.

The spelling of 83947051 in words is "eighty-three million, nine hundred forty-seven thousand, fifty-one".