71450739 has 12 divisors (see below), whose sum is σ = 103332216. Its totient is φ = 47575872.

The previous prime is 71450689. The next prime is 71450759. The reversal of 71450739 is 93705417.

It is a happy number.

It is not a de Polignac number, because 71450739 - 2⁷ = 71450611 is a prime.

It is a super-2 number, since 2×71450739² = 10210416207292242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71450759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3787 + ... + 12539.

It is an arithmetic number, because the mean of its divisors is an integer number (8611018).

Almost surely, 2^71450739 is an apocalyptic number.

71450739 is a deficient number, since it is larger than the sum of its proper divisors (31881477).

71450739 is a wasteful number, since it uses less digits than its factorization.

71450739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9666 (or 9663 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 71450739 is about 8452.8538967617. The cubic root of 71450739 is about 414.9561844679.

The spelling of 71450739 in words is "seventy-one million, four hundred fifty thousand, seven hundred thirty-nine".