70993439 has 4 divisors (see below), whose sum is σ = 77447400. Its totient is φ = 64539480.

The previous prime is 70993409. The next prime is 70993451. The reversal of 70993439 is 93439907.

It is a happy number.

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 70993439 - 2¹² = 70989343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70993439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70993409) 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, 3226964 + ... + 3226985.

It is an arithmetic number, because the mean of its divisors is an integer number (19361850).

Almost surely, 2^70993439 is an apocalyptic number.

70993439 is a deficient number, since it is larger than the sum of its proper divisors (6453961).

70993439 is a wasteful number, since it uses less digits than its factorization.

70993439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6453960.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 70993439 is about 8425.7604404588. The cubic root of 70993439 is about 414.0690196643.

The spelling of 70993439 in words is "seventy million, nine hundred ninety-three thousand, four hundred thirty-nine".