78969453 has 8 divisors (see below), whose sum is σ = 110834400. Its totient is φ = 49875408.

The previous prime is 78969439. The next prime is 78969461. The reversal of 78969453 is 35496987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78969453 - 2⁵ = 78969421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78969396 and 78969405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78969413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692658 + ... + 692771.

It is an arithmetic number, because the mean of its divisors is an integer number (13854300).

Almost surely, 2^78969453 is an apocalyptic number.

It is an amenable number.

78969453 is a deficient number, since it is larger than the sum of its proper divisors (31864947).

78969453 is a wasteful number, since it uses less digits than its factorization.

78969453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385451.

The product of its digits is 1632960, while the sum is 51.

The square root of 78969453 is about 8886.4758481639. The cubic root of 78969453 is about 429.0287308038.

The spelling of 78969453 in words is "seventy-eight million, nine hundred sixty-nine thousand, four hundred fifty-three".