70090739 has 6 divisors (see below), whose sum is σ = 70430220. Its totient is φ = 69752496.

The previous prime is 70090723. The next prime is 70090763. The reversal of 70090739 is 93709007.

It is not a de Polignac number, because 70090739 - 2⁴ = 70090723 is a prime.

It is a super-2 number, since 2×70090739² = 9825423387132242, 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 = 70090699 and 70090708.

It is not an unprimeable number, because it can be changed into a prime (70090789) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 167072 + ... + 167490.

It is an arithmetic number, because the mean of its divisors is an integer number (11738370).

Almost surely, 2^70090739 is an apocalyptic number.

70090739 is a deficient number, since it is larger than the sum of its proper divisors (339481).

70090739 is an frugal number, since it uses more digits than its factorization.

70090739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 35.

The square root of 70090739 is about 8372.0212015976. The cubic root of 70090739 is about 412.3065299037.

The spelling of 70090739 in words is "seventy million, ninety thousand, seven hundred thirty-nine".