70388349 has 32 divisors (see below), whose sum is σ = 101606400. Its totient is φ = 43232640.

The previous prime is 70388333. The next prime is 70388359. The reversal of 70388349 is 94388307.

It is not a de Polignac number, because 70388349 - 2⁴ = 70388333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70388349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70388309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 393142 + ... + 393320.

It is an arithmetic number, because the mean of its divisors is an integer number (3175200).

Almost surely, 2^70388349 is an apocalyptic number.

It is an amenable number.

70388349 is a deficient number, since it is larger than the sum of its proper divisors (31218051).

70388349 is a wasteful number, since it uses less digits than its factorization.

70388349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 70388349 is about 8389.7764570935. The cubic root of 70388349 is about 412.8892663356.

Subtracting from 70388349 its sum of digits (42), we obtain a palindrome (70388307).

The spelling of 70388349 in words is "seventy million, three hundred eighty-eight thousand, three hundred forty-nine".