47078783 has 4 divisors (see below), whose sum is σ = 48227088. Its totient is φ = 45930480.

The previous prime is 47078771. The next prime is 47078809. The reversal of 47078783 is 38787074.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38787074 = 2 ⋅19393537.

It is a cyclic number.

It is not a de Polignac number, because 47078783 - 2⁴ = 47078767 is a prime.

It is a super-2 number, since 2×47078783² = 4432823617522178, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47078753) 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, 574091 + ... + 574172.

It is an arithmetic number, because the mean of its divisors is an integer number (12056772).

Almost surely, 2^47078783 is an apocalyptic number.

47078783 is a deficient number, since it is larger than the sum of its proper divisors (1148305).

47078783 is a wasteful number, since it uses less digits than its factorization.

47078783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148304.

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 47078783 is about 6861.3980353861. The cubic root of 47078783 is about 361.0841366903.

The spelling of 47078783 in words is "forty-seven million, seventy-eight thousand, seven hundred eighty-three".