78406383 has 16 divisors (see below), whose sum is σ = 114364800. Its totient is φ = 47386080.

The previous prime is 78406337. The next prime is 78406399. The reversal of 78406383 is 38360487.

It is not a de Polignac number, because 78406383 - 2¹⁴ = 78389999 is a prime.

It is a super-2 number, since 2×78406383² = 12295121790285378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78406583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9373 + ... + 15641.

It is an arithmetic number, because the mean of its divisors is an integer number (7147800).

Almost surely, 2^78406383 is an apocalyptic number.

78406383 is a deficient number, since it is larger than the sum of its proper divisors (35958417).

78406383 is a wasteful number, since it uses less digits than its factorization.

78406383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6662.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 78406383 is about 8854.7378843193. The cubic root of 78406383 is about 428.0066070981.

The spelling of 78406383 in words is "seventy-eight million, four hundred six thousand, three hundred eighty-three".