70729349 has 4 divisors (see below), whose sum is σ = 70768236. Its totient is φ = 70690464.

The previous prime is 70729339. The next prime is 70729409. The reversal of 70729349 is 94392707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94392707 = 1583 ⋅59629.

It can be written as a sum of positive squares in 2 ways, for example, as 38353249 + 32376100 = 6193^2 + 5690^2 .

It is a cyclic number.

It is not a de Polignac number, because 70729349 - 2²⁴ = 53952133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70729319) 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, 16574 + ... + 20399.

It is an arithmetic number, because the mean of its divisors is an integer number (17692059).

Almost surely, 2^70729349 is an apocalyptic number.

It is an amenable number.

70729349 is a deficient number, since it is larger than the sum of its proper divisors (38887).

70729349 is a wasteful number, since it uses less digits than its factorization.

70729349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38886.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 70729349 is about 8410.0742565093. The cubic root of 70729349 is about 413.5549469892.

The spelling of 70729349 in words is "seventy million, seven hundred twenty-nine thousand, three hundred forty-nine".