78953090 has 8 divisors (see below), whose sum is σ = 142115580. Its totient is φ = 31581232.

The previous prime is 78953087. The next prime is 78953101. The reversal of 78953090 is 9035987.

It can be written as a sum of positive squares in 2 ways, for example, as 71893441 + 7059649 = 8479^2 + 2657^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3947645 + ... + 3947664.

Almost surely, 2^78953090 is an apocalyptic number.

78953090 is a deficient number, since it is larger than the sum of its proper divisors (63162490).

78953090 is a wasteful number, since it uses less digits than its factorization.

78953090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7895316.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 78953090 is about 8885.5551317855. Note that the first 3 decimals coincide. The cubic root of 78953090 is about 428.9990962140. Note that the first 3 decimals are identical.

The spelling of 78953090 in words is "seventy-eight million, nine hundred fifty-three thousand, ninety".