70399403 has 4 divisors (see below), whose sum is σ = 70639968. Its totient is φ = 70158840.

The previous prime is 70399391. The next prime is 70399451. The reversal of 70399403 is 30499307.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70399403 - 2⁴ = 70399387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70399453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119843 + ... + 120428.

It is an arithmetic number, because the mean of its divisors is an integer number (17659992).

Almost surely, 2^70399403 is an apocalyptic number.

70399403 is a deficient number, since it is larger than the sum of its proper divisors (240565).

70399403 is a wasteful number, since it uses less digits than its factorization.

70399403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240564.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 70399403 is about 8390.4352092129. The cubic root of 70399403 is about 412.9108789989.

The spelling of 70399403 in words is "seventy million, three hundred ninety-nine thousand, four hundred three".