70439430 has 16 divisors (see below), whose sum is σ = 169054704. Its totient is φ = 18783840.

The previous prime is 70439429. The next prime is 70439437. The reversal of 70439430 is 3493407.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2347981 = 70439430 / (7 + 0 + 4 + 3 + 9 + 4 + 3 + 0).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70439437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1173961 + ... + 1174020.

It is an arithmetic number, because the mean of its divisors is an integer number (10565919).

Almost surely, 2^70439430 is an apocalyptic number.

70439430 is an abundant number, since it is smaller than the sum of its proper divisors (98615274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70439430 is a wasteful number, since it uses less digits than its factorization.

70439430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347991.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 70439430 is about 8392.8201458151. The cubic root of 70439430 is about 412.9891204407.

The spelling of 70439430 in words is "seventy million, four hundred thirty-nine thousand, four hundred thirty".