70399935 has 20 divisors (see below), whose sum is σ = 126199128. Its totient is φ = 37546416.

The previous prime is 70399933. The next prime is 70399957. The reversal of 70399935 is 53999307.

It is not a de Polignac number, because 70399935 - 2¹ = 70399933 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70399933) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 86509 + ... + 87318.

Almost surely, 2^70399935 is an apocalyptic number.

70399935 is a deficient number, since it is larger than the sum of its proper divisors (55799193).

70399935 is a wasteful number, since it uses less digits than its factorization.

70399935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173844 (or 173835 counting only the distinct ones).

The product of its (nonzero) digits is 229635, while the sum is 45.

The square root of 70399935 is about 8390.4669119185. The cubic root of 70399935 is about 412.9119191026.

The spelling of 70399935 in words is "seventy million, three hundred ninety-nine thousand, nine hundred thirty-five".