78362983 has 4 divisors (see below), whose sum is σ = 78640168. Its totient is φ = 78085800.

The previous prime is 78362969. The next prime is 78363007. The reversal of 78362983 is 38926387.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38926387 = 47 ⋅828221.

It is a cyclic number.

It is not a de Polignac number, because 78362983 - 2⁵ = 78362951 is a prime.

It is a super-2 number, since 2×78362983² = 12281514209316578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78362923) 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, 138168 + ... + 138733.

It is an arithmetic number, because the mean of its divisors is an integer number (19660042).

Almost surely, 2^78362983 is an apocalyptic number.

78362983 is a deficient number, since it is larger than the sum of its proper divisors (277185).

78362983 is a wasteful number, since it uses less digits than its factorization.

78362983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277184.

The product of its digits is 435456, while the sum is 46.

The square root of 78362983 is about 8852.2868796713. The cubic root of 78362983 is about 427.9276215426.

The spelling of 78362983 in words is "seventy-eight million, three hundred sixty-two thousand, nine hundred eighty-three".