70029749 has 4 divisors (see below), whose sum is σ = 74149164. Its totient is φ = 65910336.

The previous prime is 70029731. The next prime is 70029811. The reversal of 70029749 is 94792007.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94792007 = 19 ⋅4989053.

It can be written as a sum of positive squares in 2 ways, for example, as 23107249 + 46922500 = 4807^2 + 6850^2 .

It is a cyclic number.

It is not a de Polignac number, because 70029749 - 2²⁰ = 68981173 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 (70029709) 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, 2059682 + ... + 2059715.

It is an arithmetic number, because the mean of its divisors is an integer number (18537291).

Almost surely, 2^70029749 is an apocalyptic number.

It is an amenable number.

70029749 is a deficient number, since it is larger than the sum of its proper divisors (4119415).

70029749 is a wasteful number, since it uses less digits than its factorization.

70029749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4119414.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 70029749 is about 8368.3779192864. The cubic root of 70029749 is about 412.1869046247.

The spelling of 70029749 in words is "seventy million, twenty-nine thousand, seven hundred forty-nine".