70396989 has 32 divisors (see below), whose sum is σ = 103993344. Its totient is φ = 42094080.

The previous prime is 70396973. The next prime is 70396993. The reversal of 70396989 is 98969307.

It is not a de Polignac number, because 70396989 - 2⁴ = 70396973 is a prime.

It is a super-2 number, since 2×70396989² = 9911472120532242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70396969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302017 + ... + 302249.

It is an arithmetic number, because the mean of its divisors is an integer number (3249792).

Almost surely, 2^70396989 is an apocalyptic number.

It is an amenable number.

70396989 is a deficient number, since it is larger than the sum of its proper divisors (33596355).

70396989 is a wasteful number, since it uses less digits than its factorization.

70396989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 70396989 is about 8390.2913537016. The cubic root of 70396989 is about 412.9061593649.

It can be divided in two parts, 7039 and 6989, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 70396989 in words is "seventy million, three hundred ninety-six thousand, nine hundred eighty-nine".