87406029 has 12 divisors (see below), whose sum is σ = 130607100. Its totient is φ = 56261184.

The previous prime is 87405961. The next prime is 87406031. The reversal of 87406029 is 92060478.

87406029 is a `hidden beast` number, since 8 + 7 + 40 + 602 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38378025 + 49028004 = 6195^2 + 7002^2 .

It is not a de Polignac number, because 87406029 - 2¹³ = 87397837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87405984 and 87406002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87406069) 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, 167184 + ... + 167705.

It is an arithmetic number, because the mean of its divisors is an integer number (10883925).

Almost surely, 2^87406029 is an apocalyptic number.

It is an amenable number.

87406029 is a deficient number, since it is larger than the sum of its proper divisors (43201071).

87406029 is a wasteful number, since it uses less digits than its factorization.

87406029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334924 (or 334921 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 87406029 is about 9349.1191563698. The cubic root of 87406029 is about 443.7930158922.

The spelling of 87406029 in words is "eighty-seven million, four hundred six thousand, twenty-nine".