70081939 has 8 divisors (see below), whose sum is σ = 74748528. Its totient is φ = 65475840.

The previous prime is 70081909. The next prime is 70082003. The reversal of 70081939 is 93918007.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70081939 - 2¹³ = 70073747 is a prime.

It is a super-2 number, since 2×70081939² = 9822956347999442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70081898 and 70081907.

It is not an unprimeable number, because it can be changed into a prime (70081909) 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, 12717 + ... + 17374.

It is an arithmetic number, because the mean of its divisors is an integer number (9343566).

Almost surely, 2^70081939 is an apocalyptic number.

70081939 is a deficient number, since it is larger than the sum of its proper divisors (4666589).

70081939 is a wasteful number, since it uses less digits than its factorization.

70081939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30245.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 70081939 is about 8371.4956250362. The cubic root of 70081939 is about 412.2892739420.

The spelling of 70081939 in words is "seventy million, eighty-one thousand, nine hundred thirty-nine".