149906451 has 4 divisors (see below), whose sum is σ = 199875272. Its totient is φ = 99937632.

The previous prime is 149906441. The next prime is 149906461. The reversal of 149906451 is 154609941.

149906451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (149906441) and next prime (149906461).

It is not a de Polignac number, because 149906451 - 2⁹ = 149905939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149906401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24984406 + ... + 24984411.

It is an arithmetic number, because the mean of its divisors is an integer number (49968818).

Almost surely, 2^149906451 is an apocalyptic number.

149906451 is a deficient number, since it is larger than the sum of its proper divisors (49968821).

149906451 is an equidigital number, since it uses as much as digits as its factorization.

149906451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49968820.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 149906451 is about 12243.6289963393. The cubic root of 149906451 is about 531.2188053471.

The spelling of 149906451 in words is "one hundred forty-nine million, nine hundred six thousand, four hundred fifty-one".